⬆️ Bump github/codeql-action from 4.32.1 to 4.32.3 (#5077 )

Bumps [github/codeql-action](https://github.com/github/codeql-action) from 4.32.1 to 4.32.3. - [Release notes](https://github.com/github/codeql-action/releases) - [Changelog](https://github.com/github/codeql-action/blob/main/CHANGELOG.md) - [Commits](6bc82e05fd...9e907b5e64) --- updated-dependencies: - dependency-name: github/codeql-action dependency-version: 4.32.3 dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
⬆️ Bump srvaroa/labeler (#5080 )
2026-02-17 09:03:58 +00:00 · 2026-02-16 19:36:02 +01:00 · 2026-02-16 19:35:48 +01:00 · 2026-02-09 20:15:00 +01:00 · 2026-02-07 09:15:18 +01:00 · 2026-02-03 07:33:53 +01:00
177 changed files with 919 additions and 355 deletions
--- a/.github/ISSUE_TEMPLATE/bug.yaml
+++ b/.github/ISSUE_TEMPLATE/bug.yaml
@@ -14,6 +14,8 @@ body:
        Note that this form is for bug reports only. Please
        [open a discussion](https://github.com/nlohmann/json/discussions/new)
        for questions, feature requests, or support requests.
+        **Please check the [FAQ](https://json.nlohmann.me/home/faq/) before
+        reporting an issue.** Common questions are answered there.        
  - type: textarea
    id: summary
    attributes:
--- a/.github/workflows/check_amalgamation.yml
+++ b/.github/workflows/check_amalgamation.yml
@@ -11,7 +11,7 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Harden Runner
-        uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
        with:
          egress-policy: audit

@@ -20,7 +20,7 @@ jobs:
          mkdir -p ./pr
          echo ${{ github.event.number }} > ./pr/number
          echo ${{ github.event.pull_request.user.login }} > ./pr/author
-      - uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
+      - uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
        with:
          name: pr
          path: pr/
@@ -34,18 +34,18 @@ jobs:

    steps:
      - name: Harden Runner
-        uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
        with:
          egress-policy: audit

      - name: Checkout pull request
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          path: main
          ref: ${{ github.event.pull_request.head.sha }}

      - name: Checkout tools
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          path: tools
          ref: develop
--- a/.github/workflows/cifuzz.yml
+++ b/.github/workflows/cifuzz.yml
@@ -6,29 +6,29 @@ permissions:

 jobs:
  Fuzzing:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
    steps:
    - name: Harden Runner
-      uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+      uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
      with:
        egress-policy: audit

    - name: Build Fuzzers
      id: build
-      uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@57fe4475324c5506adbfecdcdd2917f65c86ee9e # master
+      uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
      with:
        oss-fuzz-project-name: 'json'
        dry-run: false
        language: c++
    - name: Run Fuzzers
-      uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@57fe4475324c5506adbfecdcdd2917f65c86ee9e # master
+      uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
      with:
        oss-fuzz-project-name: 'json'
        fuzz-seconds: 300
        dry-run: false
        language: c++
    - name: Upload Crash
-      uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
+      uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
      if: failure() && steps.build.outcome == 'success'
      with:
        name: artifacts
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -27,23 +27,23 @@ jobs:

    steps:
    - name: Harden Runner
-      uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+      uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
      with:
        egress-policy: audit

    - name: Checkout repository
-      uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

    # Initializes the CodeQL tools for scanning.
    - name: Initialize CodeQL
-      uses: github/codeql-action/init@0499de31b99561a6d14a36a5f662c2a54f91beee # v4.31.2
+      uses: github/codeql-action/init@9e907b5e64f6b83e7804b09294d44122997950d6 # v4.32.3
      with:
        languages: c-cpp

    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
    # If this step fails, then you should remove it and run the build manually (see below)
    - name: Autobuild
-      uses: github/codeql-action/autobuild@0499de31b99561a6d14a36a5f662c2a54f91beee # v4.31.2
+      uses: github/codeql-action/autobuild@9e907b5e64f6b83e7804b09294d44122997950d6 # v4.32.3

    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@0499de31b99561a6d14a36a5f662c2a54f91beee # v4.31.2
+      uses: github/codeql-action/analyze@9e907b5e64f6b83e7804b09294d44122997950d6 # v4.32.3
--- a/.github/workflows/comment_check_amalgamation.yml
+++ b/.github/workflows/comment_check_amalgamation.yml
@@ -19,7 +19,7 @@ jobs:
      pull-requests: write
    steps:
      - name: Harden Runner
-        uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
        with:
          egress-policy: audit

--- a/.github/workflows/dependency-review.yml
+++ b/.github/workflows/dependency-review.yml
@@ -17,11 +17,11 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Harden Runner
-        uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
        with:
          egress-policy: audit

      - name: 'Checkout Repository'
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: 'Dependency Review'
-        uses: actions/dependency-review-action@40c09b7dc99638e5ddb0bfd91c1673effc064d8a # v4.8.1
+        uses: actions/dependency-review-action@3c4e3dcb1aa7874d2c16be7d79418e9b7efd6261 # v4.8.2
--- a/.github/workflows/flawfinder.yml
+++ b/.github/workflows/flawfinder.yml
@@ -0,0 +1,46 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+name: flawfinder
+
+permissions:
+  contents: read
+
+on:
+  push:
+    branches: [ "develop" ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ "develop" ]
+  schedule:
+    - cron: '41 14 * * 3'
+
+jobs:
+  flawfinder:
+    name: Flawfinder
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
+        with:
+          egress-policy: audit
+
+      - name: Checkout code
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: flawfinder_scan
+        uses: david-a-wheeler/flawfinder@c57197cd6061453f10a496f30a732bc1905918d1 # v2.0.19
+        with:
+          arguments: '--sarif ./'
+          output: 'flawfinder_results.sarif'
+
+      - name: Upload analysis results to GitHub Security tab
+        uses: github/codeql-action/upload-sarif@9e907b5e64f6b83e7804b09294d44122997950d6 # v4
+        with:
+          sarif_file: ${{github.workspace}}/flawfinder_results.sarif
--- a/.github/workflows/labeler.yml
+++ b/.github/workflows/labeler.yml
@@ -17,10 +17,10 @@ jobs:

    steps:
      - name: Harden Runner
-        uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
        with:
          egress-policy: audit

-      - uses: srvaroa/labeler@b4493338d7929ddc4ffc95fadf6f28c73bae2e90 # master
+      - uses: srvaroa/labeler@471cdb892ebac76de6cb869105a2017fa3b9b9b3 # master
        env:
          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -27,7 +27,7 @@ jobs:
 #      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer
 #
 #    steps:
-#      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+#      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 #      - name: Run CMake
 #        run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On -DJSON_FastTests=ON
 #      - name: Build
@@ -45,7 +45,7 @@ jobs:
 #      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer
 #
 #    steps:
-#      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+#      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 #      - name: Run CMake
 #        run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On -DJSON_FastTests=ON
 #      - name: Build
@@ -63,7 +63,7 @@ jobs:
 #      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer
 #
 #    steps:
-#      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+#      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 #      - name: Run CMake
 #        run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On -DJSON_FastTests=ON
 #      - name: Build
@@ -80,7 +80,7 @@ jobs:
      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Run CMake
        run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On -DJSON_FastTests=ON
      - name: Build
@@ -97,7 +97,7 @@ jobs:
      DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode }}.app/Contents/Developer

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Run CMake
        run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On -DJSON_FastTests=ON
      - name: Build
@@ -112,7 +112,7 @@ jobs:
        standard: [11, 14, 17, 20, 23, 26]

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Run CMake
        run: cmake -S . -B build -D CMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On -DJSON_TestStandards=${{ matrix.standard }}
      - name: Build
--- a/.github/workflows/publish_documentation.yml
+++ b/.github/workflows/publish_documentation.yml
@@ -27,11 +27,11 @@ jobs:
    runs-on: ubuntu-22.04
    steps:
      - name: Harden Runner
-        uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
        with:
          egress-policy: audit

-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

      - name: Install virtual environment
        run: make install_venv -C docs/mkdocs
--- a/.github/workflows/scorecards.yml
+++ b/.github/workflows/scorecards.yml
@@ -36,12 +36,12 @@ jobs:

    steps:
      - name: Harden Runner
-        uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
        with:
          egress-policy: audit

      - name: "Checkout code"
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false

@@ -68,7 +68,7 @@ jobs:
      # Upload the results as artifacts (optional). Commenting out will disable uploads of run results in SARIF
      # format to the repository Actions tab.
      - name: "Upload artifact"
-        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
        with:
          name: SARIF file
          path: results.sarif
@@ -76,6 +76,6 @@ jobs:

      # Upload the results to GitHub's code scanning dashboard.
      - name: "Upload to code-scanning"
-        uses: github/codeql-action/upload-sarif@0499de31b99561a6d14a36a5f662c2a54f91beee # v4.31.2
+        uses: github/codeql-action/upload-sarif@9e907b5e64f6b83e7804b09294d44122997950d6 # v4.32.3
        with:
          sarif_file: results.sarif
--- a/.github/workflows/semgrep.yml
+++ b/.github/workflows/semgrep.yml
@@ -0,0 +1,54 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+# This workflow file requires a free account on Semgrep.dev to
+# manage rules, file ignores, notifications, and more.
+#
+# See https://semgrep.dev/docs
+
+name: Semgrep
+
+on:
+  push:
+    branches: [ "develop" ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ "develop" ]
+  schedule:
+    - cron: '23 2 * * 4'
+
+permissions:
+  contents: read
+
+jobs:
+  semgrep:
+    permissions:
+      contents: read # for actions/checkout to fetch code
+      security-events: write # for github/codeql-action/upload-sarif to upload SARIF results
+      actions: read # only required for a private repository by github/codeql-action/upload-sarif to get the Action run status
+    name: Scan
+    runs-on: ubuntu-latest
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
+        with:
+          egress-policy: audit
+
+      # Checkout project source
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      # Scan code using project's configuration on https://semgrep.dev/manage
+      - uses: returntocorp/semgrep-action@713efdd345f3035192eaa63f56867b88e63e4e5d
+        with:
+          publishToken: ${{ secrets.SEMGREP_APP_TOKEN }}
+          publishDeployment: ${{ secrets.SEMGREP_DEPLOYMENT_ID }}
+          generateSarif: "1"
+
+      # Upload SARIF file generated in previous step
+      - name: Upload SARIF file
+        uses: github/codeql-action/upload-sarif@9e907b5e64f6b83e7804b09294d44122997950d6 # v4
+        with:
+          sarif_file: semgrep.sarif
+        if: always()
--- a/.github/workflows/stale.yml
+++ b/.github/workflows/stale.yml
@@ -16,11 +16,11 @@ jobs:

    steps:
      - name: Harden Runner
-        uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
        with:
          egress-policy: audit

-      - uses: actions/stale@5f858e3efba33a5ca4407a664cc011ad407f2008 # v10.1.0
+      - uses: actions/stale@997185467fa4f803885201cee163a9f38240193d # v10.1.1
        with:
          stale-issue-label: 'state: stale'
          stale-pr-label: 'state: stale'
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -21,9 +21,9 @@ jobs:
    runs-on: ubuntu-latest
    container: gcc:latest
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Get latest CMake and ninja
-        uses: lukka/get-cmake@628dd514bed37cb0a609e84a6186cbbaa2fc0140 # v4.02
+        uses: lukka/get-cmake@dc05ee1ee5ba69770230c73a6a4e947595745cab # v4.2.2
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
@@ -33,7 +33,7 @@ jobs:
    runs-on: ubuntu-latest
    container: ghcr.io/nlohmann/json-ci:v2.4.0
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
@@ -46,15 +46,15 @@ jobs:
        target: [ci_test_amalgamation, ci_test_single_header, ci_cppcheck, ci_cpplint, ci_reproducible_tests, ci_non_git_tests, ci_offline_testdata, ci_reuse_compliance, ci_test_valgrind]
    steps:
      - name: Harden Runner
-        uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
        with:
          egress-policy: audit

      - name: Install Valgrind
        run: sudo apt-get update ; sudo apt-get install -y valgrind
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Get latest CMake and ninja
-        uses: lukka/get-cmake@628dd514bed37cb0a609e84a6186cbbaa2fc0140 # v4.02
+        uses: lukka/get-cmake@dc05ee1ee5ba69770230c73a6a4e947595745cab # v4.2.2
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
@@ -69,9 +69,9 @@ jobs:
    steps:
      - name: Install git, clang-tools, iwyu (ci_single_binaries), and unzip
        run: apt-get update ; apt-get install -y git clang-tools iwyu unzip
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Get latest CMake and ninja
-        uses: lukka/get-cmake@628dd514bed37cb0a609e84a6186cbbaa2fc0140 # v4.02
+        uses: lukka/get-cmake@dc05ee1ee5ba69770230c73a6a4e947595745cab # v4.2.2
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
@@ -86,9 +86,9 @@ jobs:
    steps:
      - name: Install build-essential
        run: apt-get update ; apt-get install -y build-essential unzip wget git libssl-dev
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Get latest CMake and ninja
-        uses: lukka/get-cmake@628dd514bed37cb0a609e84a6186cbbaa2fc0140 # v4.02
+        uses: lukka/get-cmake@dc05ee1ee5ba69770230c73a6a4e947595745cab # v4.2.2
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
@@ -98,11 +98,11 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Harden Runner
-        uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
        with:
          egress-policy: audit

-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Install dependencies and de_DE locale
        run: |
          sudo apt-get clean
@@ -115,12 +115,12 @@ jobs:
      - name: Build
        run: cmake --build build --target ci_test_coverage
      - name: Archive coverage report
-        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
        with:
          name: code-coverage-report
          path: ${{ github.workspace }}/build/html
      - name: Publish report to Coveralls
-        uses: coverallsapp/github-action@648a8eb78e6d50909eff900e4ec85cab4524a45b # v2.3.6
+        uses: coverallsapp/github-action@5cbfd81b66ca5d10c19b062c04de0199c215fb6e # v2.3.7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          path-to-lcov: ${{ github.workspace }}/build/json.info.filtered.noexcept
@@ -133,7 +133,7 @@ jobs:
        compiler: ['4.8', '4.9', '5', '6']
    container: ghcr.io/nlohmann/json-ci:v2.4.0
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Run CMake
        run: CXX=g++-${{ matrix.compiler }} cmake -S . -B build -DJSON_CI=On
      - name: Build
@@ -147,9 +147,9 @@ jobs:
        compiler: ['7', '8', '9', '10', '11', '12', '13', '14', '15', 'latest']
    container: gcc:${{ matrix.compiler }}
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Get latest CMake and ninja
-        uses: lukka/get-cmake@628dd514bed37cb0a609e84a6186cbbaa2fc0140 # v4.02
+        uses: lukka/get-cmake@dc05ee1ee5ba69770230c73a6a4e947595745cab # v4.2.2
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
@@ -162,9 +162,9 @@ jobs:
        compiler: ['3.4', '3.5', '3.6', '3.7', '3.8', '3.9', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15-bullseye', '16', '17', '18', '19', '20', 'latest']
    container: silkeh/clang:${{ matrix.compiler }}
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Get latest CMake and ninja
-        uses: lukka/get-cmake@628dd514bed37cb0a609e84a6186cbbaa2fc0140 # v4.02
+        uses: lukka/get-cmake@dc05ee1ee5ba69770230c73a6a4e947595745cab # v4.2.2
      - name: Set env FORCE_STDCPPFS_FLAG for clang 7 / 8 / 9 / 10
        run: echo "JSON_FORCED_GLOBAL_COMPILE_OPTIONS=-DJSON_HAS_FILESYSTEM=0;-DJSON_HAS_EXPERIMENTAL_FILESYSTEM=0" >> "$GITHUB_ENV"
        if: ${{ matrix.compiler == '7' || matrix.compiler == '8' || matrix.compiler == '9' || matrix.compiler == '10' }}
@@ -180,9 +180,9 @@ jobs:
      matrix:
        standard: [11, 14, 17, 20, 23, 26]
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Get latest CMake and ninja
-        uses: lukka/get-cmake@628dd514bed37cb0a609e84a6186cbbaa2fc0140 # v4.02
+        uses: lukka/get-cmake@dc05ee1ee5ba69770230c73a6a4e947595745cab # v4.2.2
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
@@ -198,9 +198,9 @@ jobs:
    steps:
      - name: Install git and unzip
        run: apt-get update ; apt-get install -y git unzip
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Get latest CMake and ninja
-        uses: lukka/get-cmake@628dd514bed37cb0a609e84a6186cbbaa2fc0140 # v4.02
+        uses: lukka/get-cmake@dc05ee1ee5ba69770230c73a6a4e947595745cab # v4.2.2
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build with libc++
@@ -214,7 +214,7 @@ jobs:
    runs-on: ubuntu-latest
    container: ghcr.io/nlohmann/json-ci:v2.4.0
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
@@ -227,9 +227,9 @@ jobs:
    runs-on: ubuntu-latest
    container: ${{ matrix.container }}
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Get latest CMake and ninja
-        uses: lukka/get-cmake@628dd514bed37cb0a609e84a6186cbbaa2fc0140 # v4.02
+        uses: lukka/get-cmake@dc05ee1ee5ba69770230c73a6a4e947595745cab # v4.2.2
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
@@ -239,7 +239,7 @@ jobs:
    runs-on: ubuntu-latest
    container: ghcr.io/nlohmann/json-ci:v2.2.0
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
@@ -251,15 +251,15 @@ jobs:
    runs-on: ubuntu-latest
    steps:
      - name: Harden Runner
-        uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
        with:
          egress-policy: audit

      - name: Install emscripten
        uses: mymindstorm/setup-emsdk@6ab9eb1bda2574c4ddb79809fc9247783eaf9021 # v14
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Get latest CMake and ninja
-        uses: lukka/get-cmake@628dd514bed37cb0a609e84a6186cbbaa2fc0140 # v4.02
+        uses: lukka/get-cmake@dc05ee1ee5ba69770230c73a6a4e947595745cab # v4.2.2
      - name: Run CMake
        run: cmake -S . -B build -DCMAKE_TOOLCHAIN_FILE=$EMSDK/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake -GNinja
      - name: Build
@@ -272,11 +272,11 @@ jobs:
        target: [ci_test_examples, ci_test_build_documentation]
    steps:
      - name: Harden Runner
-        uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
        with:
          egress-policy: audit

-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -24,9 +24,9 @@ jobs:
        architecture: [x64, x86]

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Set up MinGW
-        uses: egor-tensin/setup-mingw@84c781b557efd538dec66bde06988d81cd3138cf # v2.2.0
+        uses: egor-tensin/setup-mingw@41b837e47d7f85214629d255b9c4bc3fcbe9fd63 # v3.0
        with:
          platform: ${{ matrix.architecture }}
          version: 12.2.0 # https://github.com/egor-tensin/setup-mingw/issues/14
@@ -47,7 +47,7 @@ jobs:
    runs-on: windows-2022

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Set extra CXX_FLAGS for latest std_version
        id: cxxflags
        run: |
@@ -77,11 +77,11 @@ jobs:
        version: [11.0.1, 12.0.1, 13.0.1, 14.0.6, 15.0.7, 16.0.6, 18.1.8, 19.1.7, 20.1.8]

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Install Clang
        run: curl -fsSL -o LLVM${{ matrix.version }}.exe https://github.com/llvm/llvm-project/releases/download/llvmorg-${{ matrix.version }}/LLVM-${{ matrix.version }}-win64.exe ; 7z x LLVM${{ matrix.version }}.exe -y -o"C:/Program Files/LLVM"
      - name: Set up MinGW
-        uses: egor-tensin/setup-mingw@84c781b557efd538dec66bde06988d81cd3138cf # v2.2.0
+        uses: egor-tensin/setup-mingw@41b837e47d7f85214629d255b9c4bc3fcbe9fd63 # v3.0
        with:
          platform: x64
          version: 12.2.0 # https://github.com/egor-tensin/setup-mingw/issues/14
@@ -105,7 +105,7 @@ jobs:
        architecture: [Win32, x64]

    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Run CMake
        run: cmake -S . -B build -G "Visual Studio 17 2022" -A ${{ matrix.architecture }} -T ClangCL -DJSON_BuildTests=On
      - name: Build
@@ -116,7 +116,7 @@ jobs:
  ci_module_cpp20:
    runs-on: windows-latest
    steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Run CMake (Debug)
        run: cmake -S . -B build -G "Visual Studio 17 2022" -DJSON_CI=ON -DCMAKE_CXX_FLAGS="/permissive- /std:c++latest /utf-8 /W4 /WX"
      - name: Build
--- a/.reuse/dep5
+++ b/.reuse/dep5
@@ -4,7 +4,7 @@ Upstream-Contact: Niels Lohmann <mail@nlohmann.me>
 Source: https://github.com/nlohmann/json

 Files: *
-Copyright: 2013-2025 Niels Lohmann <https://nlohmann.me>
+Copyright: 2013-2026 Niels Lohmann <https://nlohmann.me>
 License: MIT

 Files: include/nlohmann/thirdparty/hedley.hpp
--- a/LICENSE.MIT
+++ b/LICENSE.MIT
@@ -1,6 +1,6 @@
 MIT License 

-Copyright (c) 2013-2025 Niels Lohmann
+Copyright (c) 2013-2026 Niels Lohmann

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
--- a/4
+++ b/4
@@ -258,8 +258,8 @@ serve_header:
 ##########################################################################

 reuse:
-	pipx run reuse annotate --recursive single_include include -tjson --license MIT --copyright "Niels Lohmann <https://nlohmann.me>" --year "2013-2025" --merge-copyrights
-	pipx run reuse annotate $(TESTS_SRCS) -tjson_support --license MIT --copyright "Niels Lohmann <https://nlohmann.me>" --year "2013-2025" --merge-copyrights
+	pipx run reuse annotate --recursive single_include include -tjson --license MIT --copyright "Niels Lohmann <https://nlohmann.me>" --year "2013-2026" --merge-copyrights
+	pipx run reuse annotate $(TESTS_SRCS) -tjson_support --license MIT --copyright "Niels Lohmann <https://nlohmann.me>" --year "2013-2026" --merge-copyrights
 	pipx run reuse lint

 spdx:
--- a/README.md
+++ b/README.md
@@ -80,6 +80,7 @@ You can sponsor this library at [GitHub Sponsors](https://github.com/sponsors/nl

 - [Martti Laine](https://github.com/codeclown)
 - [Paul Harrington](https://github.com/phrrngtn)
+- [Mercedes-Benz Group](https://github.com/mercedes-benz)

 ### :label: Named Sponsors

@@ -1155,7 +1156,7 @@ The library is used in multiple projects, applications, operating systems, etc.

 ## Supported compilers

-Though it's 2025 already, the support for C++11 is still a bit sparse. Currently, the following compilers are known to work:
+Though it's 2026 already, the support for C++11 is still a bit sparse. Currently, the following compilers are known to work:

 - GCC 4.8 - 14.2 (and possibly later)
 - Clang 3.4 - 21.0 (and possibly later)
@@ -1334,7 +1335,7 @@ pkg-config nlohmann_json --cflags

 The class is licensed under the [MIT License](https://opensource.org/licenses/MIT):

-Copyright &copy; 2013-2025 [Niels Lohmann](https://nlohmann.me)
+Copyright &copy; 2013-2026 [Niels Lohmann](https://nlohmann.me)

 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

@@ -1865,7 +1866,7 @@ ctest --output-on-failure

 Note that during the `ctest` stage, several JSON test files are downloaded from an [external repository](https://github.com/nlohmann/json_test_data). If policies forbid downloading artifacts during testing, you can download the files yourself and pass the directory with the test files via `-DJSON_TestDataDirectory=path` to CMake. Then, no Internet connectivity is required. See [issue #2189](https://github.com/nlohmann/json/issues/2189) for more information.

-If the test suite is not found, several test suites will fail like this:
+If the testdata is not found, several test suites will fail like this:

 ```
 ===============================================================================
@@ -1883,6 +1884,8 @@ json/tests/src/make_test_data_available.hpp:23: FATAL ERROR: REQUIRE( utils::che

 In case you have downloaded the library rather than checked out the code via Git, test `cmake_fetch_content_configure` will fail. Please execute `ctest -LE git_required` to skip these tests. See [issue #2189](https://github.com/nlohmann/json/issues/2189) for more information.

+Some tests are requiring network to be properly execute. They are labeled as `git_required`. Please execute `ctest -LE git_required` to skip these tests. See [issue #4851](https://github.com/nlohmann/json/issues/4851) for more information.
+
 Some tests change the installed files and hence make the whole process not reproducible. Please execute `ctest -LE not_reproducible` to skip these tests. See [issue #2324](https://github.com/nlohmann/json/issues/2324) for more information. Furthermore, assertions must be switched off to ensure reproducible builds (see [discussion 4494](https://github.com/nlohmann/json/discussions/4494)).

 Note you need to call `cmake -LE "not_reproducible|git_required"` to exclude both labels. See [issue #2596](https://github.com/nlohmann/json/issues/2596) for more information.
--- a/docs/README.md
+++ b/docs/README.md
@@ -2,12 +2,12 @@

 ## Generate documentation

-Note on documentation: The source files contain links to the online documentation at https://json.nlohmann.me. This URL
-contains the most recent documentation and should also be applicable to previous versions; documentation for deprecated
-functions is not removed, but marked deprecated.
+Note on documentation: The source files contain links to the online documentation at https://json.nlohmann.me.  
+This URL provides the most recent documentation and also applies to previous versions. Documentation for deprecated
+functions is not removed; instead, it is marked as deprecated.

-If you want to see the documentation for a specific tag or commit hash, you can generate it as follows (here for tag
-`v3.10.2`):
+If you want to view the documentation for a specific tag or commit hash, you can generate it locally as follows (example
+using tag `v3.10.2`):

 ```shell
 git clone https://github.com/nlohmann/json.git
@@ -16,5 +16,8 @@ git checkout v3.10.2
 make install_venv serve -C docs/mkdocs
 ```

-Open URL <http://127.0.0.1:8000/> in your browser. Replace from any URL from the source code `https://json.nlohmann.me`
-with `http://127.0.0.1:8000` to see the documentation for your tag or commit hash.
+Open <http://127.0.0.1:8000/> in your browser. Replace any URL in the source code that points to
+`https://json.nlohmann.me` with `http://127.0.0.1:8000` to view the documentation for the selected tag or commit hash.
+
+
+
--- a/docs/mkdocs/docs/examples/meta.output
+++ b/docs/mkdocs/docs/examples/meta.output
@@ -4,7 +4,7 @@
        "family": "gcc",
        "version": "12.4.0"
    },
-    "copyright": "(C) 2013-2025 Niels Lohmann",
+    "copyright": "(C) 2013-2026 Niels Lohmann",
    "name": "JSON for Modern C++",
    "platform": "apple",
    "url": "https://github.com/nlohmann/json",
--- a/docs/mkdocs/docs/home/license.md
+++ b/docs/mkdocs/docs/home/license.md
@@ -4,7 +4,7 @@

 The class is licensed under the [MIT License](https://opensource.org/licenses/MIT):

-Copyright &copy; 2013-2025 [Niels Lohmann](https://nlohmann.me)
+Copyright &copy; 2013-2026 [Niels Lohmann](https://nlohmann.me)

 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

--- a/docs/mkdocs/mkdocs.yml
+++ b/docs/mkdocs/mkdocs.yml
@@ -9,7 +9,7 @@ repo_url: https://github.com/nlohmann/json
 edit_uri: edit/develop/docs/mkdocs/docs

 # Copyright
-copyright: Copyright &copy; 2013-2025 Niels Lohmann
+copyright: Copyright &copy; 2013-2026 Niels Lohmann

 # Configuration
 theme:
--- a/docs/mkdocs/requirements.txt
+++ b/docs/mkdocs/requirements.txt
@@ -1,11 +1,11 @@
-wheel==0.45.1
+wheel==0.46.3

 mkdocs==1.6.1                                       # documentation framework
-mkdocs-git-revision-date-localized-plugin==1.4.7    # plugin "git-revision-date-localized"
-mkdocs-material==9.6.22                             # theme for mkdocs
+mkdocs-git-revision-date-localized-plugin==1.5.1    # plugin "git-revision-date-localized"
+mkdocs-material==9.7.1                             # theme for mkdocs
 mkdocs-material-extensions==1.3.1                   # extensions
 mkdocs-minify-plugin==0.8.0                         # plugin "minify"
 mkdocs-redirects==1.2.2                             # plugin "redirects"
-mkdocs-htmlproofer-plugin==1.4.0                    # plugin "htmlproofer"
+mkdocs-htmlproofer-plugin==1.4.1                    # plugin "htmlproofer"

 PyYAML==6.0.3                                       # linter
--- a/include/nlohmann/adl_serializer.hpp
+++ b/include/nlohmann/adl_serializer.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/byte_container_with_subtype.hpp
+++ b/include/nlohmann/byte_container_with_subtype.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/abi_macros.hpp
+++ b/include/nlohmann/detail/abi_macros.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/conversions/from_json.hpp
+++ b/include/nlohmann/detail/conversions/from_json.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
@@ -26,6 +26,7 @@
 #include <nlohmann/detail/meta/identity_tag.hpp>
 #include <nlohmann/detail/meta/std_fs.hpp>
 #include <nlohmann/detail/meta/type_traits.hpp>
+#include <nlohmann/detail/meta/logic.hpp>
 #include <nlohmann/detail/string_concat.hpp>
 #include <nlohmann/detail/value_t.hpp>

@@ -53,7 +54,8 @@ inline void from_json(const BasicJsonType& j, typename std::nullptr_t& n)
 }

 #ifdef JSON_HAS_CPP_17
-template<typename BasicJsonType, typename T>
+template < typename BasicJsonType, typename T,
+           typename std::enable_if < !nlohmann::detail::is_basic_json<T>::value, int >::type = 0 >
 void from_json(const BasicJsonType& j, std::optional<T>& opt)
 {
    if (j.is_null())
@@ -445,13 +447,36 @@ inline void from_json(const BasicJsonType& j, ArithmeticType& val)
    }
 }

-template<typename BasicJsonType, typename... Args, std::size_t... Idx>
-std::tuple<Args...> from_json_tuple_impl_base(BasicJsonType&& j, index_sequence<Idx...> /*unused*/)
+template<typename BasicJsonType, typename Type>
+detail::uncvref_t<Type> from_json_tuple_get_impl(BasicJsonType&& j, detail::identity_tag<Type> /*unused*/, detail::priority_tag<0> /*unused*/)
 {
-    return std::make_tuple(std::forward<BasicJsonType>(j).at(Idx).template get<Args>()...);
+    return std::forward<BasicJsonType>(j).template get<detail::uncvref_t<Type>>();
 }

-template<typename BasicJsonType>
+template<typename BasicJsonType, typename Type,
+         detail::enable_if_t<detail::is_compatible_reference_type<BasicJsonType, Type>::value, int> = 0>
+Type from_json_tuple_get_impl(BasicJsonType && j, detail::identity_tag<Type> /*unused*/, detail::priority_tag<1> /*unused*/)
+{
+    return std::forward<BasicJsonType>(j).template get_ref<Type>();
+}
+
+template<typename BasicJsonType, typename Type,
+         detail::enable_if_t<std::is_arithmetic<uncvref_t<Type>>::value, int> = 0>
+detail::uncvref_t<Type> from_json_tuple_get_impl(BasicJsonType && j, detail::identity_tag<Type> /*unused*/, detail::priority_tag<2> /*unused*/)
+{
+    return std::forward<BasicJsonType>(j).template get<detail::uncvref_t<Type>>();
+}
+
+template<std::size_t PTagValue, typename BasicJsonType, typename... Types>
+using tuple_type = std::tuple < decltype(from_json_tuple_get_impl(std::declval<BasicJsonType>(), detail::identity_tag<Types> {}, detail::priority_tag<PTagValue> {}))... >;
+
+template<std::size_t PTagValue, typename... Args, typename BasicJsonType, std::size_t... Idx>
+tuple_type<PTagValue, BasicJsonType, Args...> from_json_tuple_impl_base(BasicJsonType&& j, index_sequence<Idx...> /*unused*/)
+{
+    return tuple_type<PTagValue, BasicJsonType, Args...>(from_json_tuple_get_impl(std::forward<BasicJsonType>(j).at(Idx), detail::identity_tag<Args> {}, detail::priority_tag<PTagValue> {})...);
+}
+
+template<std::size_t PTagValue, typename BasicJsonType>
 std::tuple<> from_json_tuple_impl_base(BasicJsonType& /*unused*/, index_sequence<> /*unused*/)
 {
    return {};
@@ -473,13 +498,15 @@ inline void from_json_tuple_impl(BasicJsonType&& j, std::pair<A1, A2>& p, priori
 template<typename BasicJsonType, typename... Args>
 std::tuple<Args...> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::tuple<Args...>> /*unused*/, priority_tag<2> /*unused*/)
 {
-    return from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+    static_assert(cxpr_and<cxpr_or<cxpr_not<std::is_reference<Args>>, is_compatible_reference_type<BasicJsonType, Args>>...>::value,
+                  "Can not return a tuple containing references to types not contained in a Json, try Json::get_to()");
+    return from_json_tuple_impl_base<1, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
 }

 template<typename BasicJsonType, typename... Args>
 inline void from_json_tuple_impl(BasicJsonType&& j, std::tuple<Args...>& t, priority_tag<3> /*unused*/)
 {
-    t = from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+    t = from_json_tuple_impl_base<2, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
 }

 template<typename BasicJsonType, typename TupleRelated>
--- a/include/nlohmann/detail/conversions/to_chars.hpp
+++ b/include/nlohmann/detail/conversions/to_chars.hpp
@@ -4,7 +4,7 @@
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
 // SPDX-FileCopyrightText: 2009 Florian Loitsch <https://florian.loitsch.com/>
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/conversions/to_json.hpp
+++ b/include/nlohmann/detail/conversions/to_json.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/exceptions.hpp
+++ b/include/nlohmann/detail/exceptions.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/hash.hpp
+++ b/include/nlohmann/detail/hash.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/input/binary_reader.hpp
+++ b/include/nlohmann/detail/input/binary_reader.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
@@ -425,6 +425,25 @@ class binary_reader

    @return whether a valid CBOR value was passed to the SAX parser
    */
+
+    template<typename NumberType>
+    bool get_cbor_negative_integer()
+    {
+        NumberType number{};
+        if (JSON_HEDLEY_UNLIKELY(!get_number(input_format_t::cbor, number)))
+        {
+            return false;
+        }
+        const auto max_val = static_cast<NumberType>((std::numeric_limits<number_integer_t>::max)());
+        if (number > max_val)
+        {
+            return sax->parse_error(chars_read, get_token_string(),
+                                    parse_error::create(112, chars_read,
+                                            exception_message(input_format_t::cbor, "negative integer overflow", "value"), nullptr));
+        }
+        return sax->number_integer(static_cast<number_integer_t>(-1) - static_cast<number_integer_t>(number));
+    }
+
    bool parse_cbor_internal(const bool get_char,
                             const cbor_tag_handler_t tag_handler)
    {
@@ -513,29 +532,16 @@ class binary_reader
                return sax->number_integer(static_cast<std::int8_t>(0x20 - 1 - current));

            case 0x38: // Negative integer (one-byte uint8_t follows)
-            {
-                std::uint8_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
-            }
+                return get_cbor_negative_integer<std::uint8_t>();

            case 0x39: // Negative integer -1-n (two-byte uint16_t follows)
-            {
-                std::uint16_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
-            }
+                return get_cbor_negative_integer<std::uint16_t>();

            case 0x3A: // Negative integer -1-n (four-byte uint32_t follows)
-            {
-                std::uint32_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
-            }
+                return get_cbor_negative_integer<std::uint32_t>();

            case 0x3B: // Negative integer -1-n (eight-byte uint64_t follows)
-            {
-                std::uint64_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1)
-                        - static_cast<number_integer_t>(number));
-            }
+                return get_cbor_negative_integer<std::uint64_t>();

            // Binary data (0x00..0x17 bytes follow)
            case 0x40:
--- a/include/nlohmann/detail/input/input_adapters.hpp
+++ b/include/nlohmann/detail/input/input_adapters.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/input/json_sax.hpp
+++ b/include/nlohmann/detail/input/json_sax.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/input/lexer.hpp
+++ b/include/nlohmann/detail/input/lexer.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
@@ -863,6 +863,8 @@ class lexer : public lexer_base<BasicJsonType>
                            break;
                    }
                }
+
+                JSON_HEDLEY_UNREACHABLE();
            }

            // multi-line comments skip input until */ is read
@@ -898,6 +900,8 @@ class lexer : public lexer_base<BasicJsonType>
                            continue;
                    }
                }
+
+                JSON_HEDLEY_UNREACHABLE();
            }

            // unexpected character after reading '/'
--- a/include/nlohmann/detail/input/parser.hpp
+++ b/include/nlohmann/detail/input/parser.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/input/position_t.hpp
+++ b/include/nlohmann/detail/input/position_t.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/iterators/internal_iterator.hpp
+++ b/include/nlohmann/detail/iterators/internal_iterator.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/iterators/iter_impl.hpp
+++ b/include/nlohmann/detail/iterators/iter_impl.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/iterators/iteration_proxy.hpp
+++ b/include/nlohmann/detail/iterators/iteration_proxy.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/iterators/iterator_traits.hpp
+++ b/include/nlohmann/detail/iterators/iterator_traits.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/iterators/json_reverse_iterator.hpp
+++ b/include/nlohmann/detail/iterators/json_reverse_iterator.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/iterators/primitive_iterator.hpp
+++ b/include/nlohmann/detail/iterators/primitive_iterator.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/json_custom_base_class.hpp
+++ b/include/nlohmann/detail/json_custom_base_class.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/json_pointer.hpp
+++ b/include/nlohmann/detail/json_pointer.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/json_ref.hpp
+++ b/include/nlohmann/detail/json_ref.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/macro_scope.hpp
+++ b/include/nlohmann/detail/macro_scope.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/macro_unscope.hpp
+++ b/include/nlohmann/detail/macro_unscope.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/meta/call_std/begin.hpp
+++ b/include/nlohmann/detail/meta/call_std/begin.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/meta/call_std/end.hpp
+++ b/include/nlohmann/detail/meta/call_std/end.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/meta/cpp_future.hpp
+++ b/include/nlohmann/detail/meta/cpp_future.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-FileCopyrightText: 2018 The Abseil Authors
 // SPDX-License-Identifier: MIT

--- a/include/nlohmann/detail/meta/detected.hpp
+++ b/include/nlohmann/detail/meta/detected.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/meta/identity_tag.hpp
+++ b/include/nlohmann/detail/meta/identity_tag.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/meta/is_sax.hpp
+++ b/include/nlohmann/detail/meta/is_sax.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/meta/logic.hpp
+++ b/include/nlohmann/detail/meta/logic.hpp
@@ -0,0 +1,54 @@
+#pragma once
+
+#include <nlohmann/detail/macro_scope.hpp>
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+#ifdef JSON_HAS_CPP_17
+
+template<bool... Booleans>
+struct cxpr_or_impl : std::integral_constant < bool, (Booleans || ...) > {};
+
+template<bool... Booleans>
+struct cxpr_and_impl : std::integral_constant < bool, (Booleans &&...) > {};
+
+#else
+
+template<bool... Booleans>
+struct cxpr_or_impl : std::false_type {};
+
+template<bool... Booleans>
+struct cxpr_or_impl<true, Booleans...> : std::true_type {};
+
+template<bool... Booleans>
+struct cxpr_or_impl<false, Booleans...> : cxpr_or_impl<Booleans...> {};
+
+template<bool... Booleans>
+struct cxpr_and_impl : std::true_type {};
+
+template<bool... Booleans>
+struct cxpr_and_impl<true, Booleans...> : cxpr_and_impl<Booleans...> {};
+
+template<bool... Booleans>
+struct cxpr_and_impl<false, Booleans...> : std::false_type {};
+
+#endif
+
+template<class Boolean>
+struct cxpr_not : std::integral_constant < bool, !Boolean::value > {};
+
+template<class... Booleans>
+struct cxpr_or : cxpr_or_impl<Booleans::value...> {};
+
+template<bool... Booleans>
+struct cxpr_or_c : cxpr_or_impl<Booleans...> {};
+
+template<class... Booleans>
+struct cxpr_and : cxpr_and_impl<Booleans::value...> {};
+
+template<bool... Booleans>
+struct cxpr_and_c : cxpr_and_impl<Booleans...> {};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
--- a/include/nlohmann/detail/meta/std_fs.hpp
+++ b/include/nlohmann/detail/meta/std_fs.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/meta/type_traits.hpp
+++ b/include/nlohmann/detail/meta/type_traits.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
@@ -559,6 +559,28 @@ template<typename BasicJsonType, typename CompatibleType>
 struct is_compatible_type
    : is_compatible_type_impl<BasicJsonType, CompatibleType> {};

+template<typename BasicJsonType, typename CompatibleReferenceType>
+struct is_compatible_reference_type_impl
+{
+    using JsonType = uncvref_t<BasicJsonType>;
+    using CVType = typename std::remove_reference<CompatibleReferenceType>::type;
+    using Type = typename std::remove_cv<CVType>::type;
+    constexpr static bool value = std::is_reference<CompatibleReferenceType>::value &&
+                                  (!std::is_const<typename std::remove_reference<BasicJsonType>::type>::value || std::is_const<CVType>::value) &&
+                                  (std::is_same<typename JsonType::boolean_t, Type>::value ||
+                                   std::is_same<typename JsonType::number_float_t, Type>::value ||
+                                   std::is_same<typename JsonType::number_integer_t, Type>::value ||
+                                   std::is_same<typename JsonType::number_unsigned_t, Type>::value ||
+                                   std::is_same<typename JsonType::string_t, Type>::value ||
+                                   std::is_same<typename JsonType::binary_t, Type>::value ||
+                                   std::is_same<typename JsonType::object_t, Type>::value ||
+                                   std::is_same<typename JsonType::array_t, Type>::value);
+};
+
+template<typename BasicJsonType, typename CompatibleReferenceType>
+struct is_compatible_reference_type
+    : is_compatible_reference_type_impl<BasicJsonType, CompatibleReferenceType> {};
+
 template<typename T1, typename T2>
 struct is_constructible_tuple : std::false_type {};

@@ -636,11 +658,14 @@ using is_usable_as_key_type = typename std::conditional <
 template<typename BasicJsonType, typename KeyTypeCVRef, bool RequireTransparentComparator = true,
         bool ExcludeObjectKeyType = RequireTransparentComparator, typename KeyType = uncvref_t<KeyTypeCVRef>>
 using is_usable_as_basic_json_key_type = typename std::conditional <
-    is_usable_as_key_type<typename BasicJsonType::object_comparator_t,
-    typename BasicJsonType::object_t::key_type, KeyTypeCVRef,
-    RequireTransparentComparator, ExcludeObjectKeyType>::value
-    && !is_json_iterator_of<BasicJsonType, KeyType>::value,
-    std::true_type,
+    (is_usable_as_key_type<typename BasicJsonType::object_comparator_t,
+     typename BasicJsonType::object_t::key_type, KeyTypeCVRef,
+     RequireTransparentComparator, ExcludeObjectKeyType>::value
+     && !is_json_iterator_of<BasicJsonType, KeyType>::value)
+#ifdef JSON_HAS_CPP_17
+    || std::is_convertible<KeyType, std::string_view>::value
+#endif
+    , std::true_type,
    std::false_type >::type;

 template<typename ObjectType, typename KeyType>
--- a/include/nlohmann/detail/meta/void_t.hpp
+++ b/include/nlohmann/detail/meta/void_t.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/output/binary_writer.hpp
+++ b/include/nlohmann/detail/output/binary_writer.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/output/output_adapters.hpp
+++ b/include/nlohmann/detail/output/output_adapters.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/output/serializer.hpp
+++ b/include/nlohmann/detail/output/serializer.hpp
@@ -4,7 +4,7 @@
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
 // SPDX-FileCopyrightText: 2008, 2009 Björn Hoehrmann <bjoern@hoehrmann.de>
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
@@ -919,7 +919,7 @@ class serializer
            }
        };

-        JSON_ASSERT(byte < utf8d.size());
+        JSON_ASSERT(static_cast<std::size_t>(byte) < utf8d.size());
        const std::uint8_t type = utf8d[byte];

        codep = (state != UTF8_ACCEPT)
--- a/include/nlohmann/detail/string_concat.hpp
+++ b/include/nlohmann/detail/string_concat.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/string_escape.hpp
+++ b/include/nlohmann/detail/string_escape.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/string_utils.hpp
+++ b/include/nlohmann/detail/string_utils.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/detail/value_t.hpp
+++ b/include/nlohmann/detail/value_t.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/json.hpp
+++ b/include/nlohmann/json.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 /****************************************************************************\
@@ -253,7 +253,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
    {
        basic_json result;

-        result["copyright"] = "(C) 2013-2025 Niels Lohmann";
+        result["copyright"] = "(C) 2013-2026 Niels Lohmann";
        result["name"] = "JSON for Modern C++";
        result["url"] = "https://github.com/nlohmann/json";
        result["version"]["string"] =
--- a/include/nlohmann/json_fwd.hpp
+++ b/include/nlohmann/json_fwd.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #ifndef INCLUDE_NLOHMANN_JSON_FWD_HPP_
--- a/include/nlohmann/ordered_map.hpp
+++ b/include/nlohmann/ordered_map.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/include/nlohmann/thirdparty/hedley/hedley.hpp
+++ b/include/nlohmann/thirdparty/hedley/hedley.hpp
@@ -5,7 +5,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-FileCopyrightText: 2016-2021 Evan Nemerson <evan@nemerson.com>
 // SPDX-License-Identifier: MIT

--- a/include/nlohmann/thirdparty/hedley/hedley_undef.hpp
+++ b/include/nlohmann/thirdparty/hedley/hedley_undef.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 /****************************************************************************\
@@ -37,7 +37,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -50,7 +50,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -163,7 +163,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -186,7 +186,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -206,7 +206,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -222,7 +222,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -234,7 +234,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -247,7 +247,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -334,7 +334,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-FileCopyrightText: 2016-2021 Evan Nemerson <evan@nemerson.com>
 // SPDX-License-Identifier: MIT

@@ -3073,7 +3073,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -3148,7 +3148,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -3190,7 +3190,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-FileCopyrightText: 2018 The Abseil Authors
 // SPDX-License-Identifier: MIT

@@ -3364,7 +3364,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -3383,7 +3383,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -3451,7 +3451,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -3471,7 +3471,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -3495,7 +3495,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #ifndef INCLUDE_NLOHMANN_JSON_FWD_HPP_
@@ -4103,6 +4103,28 @@ template<typename BasicJsonType, typename CompatibleType>
 struct is_compatible_type
    : is_compatible_type_impl<BasicJsonType, CompatibleType> {};

+template<typename BasicJsonType, typename CompatibleReferenceType>
+struct is_compatible_reference_type_impl
+{
+    using JsonType = uncvref_t<BasicJsonType>;
+    using CVType = typename std::remove_reference<CompatibleReferenceType>::type;
+    using Type = typename std::remove_cv<CVType>::type;
+    constexpr static bool value = std::is_reference<CompatibleReferenceType>::value &&
+                                  (!std::is_const<typename std::remove_reference<BasicJsonType>::type>::value || std::is_const<CVType>::value) &&
+                                  (std::is_same<typename JsonType::boolean_t, Type>::value ||
+                                   std::is_same<typename JsonType::number_float_t, Type>::value ||
+                                   std::is_same<typename JsonType::number_integer_t, Type>::value ||
+                                   std::is_same<typename JsonType::number_unsigned_t, Type>::value ||
+                                   std::is_same<typename JsonType::string_t, Type>::value ||
+                                   std::is_same<typename JsonType::binary_t, Type>::value ||
+                                   std::is_same<typename JsonType::object_t, Type>::value ||
+                                   std::is_same<typename JsonType::array_t, Type>::value);
+};
+
+template<typename BasicJsonType, typename CompatibleReferenceType>
+struct is_compatible_reference_type
+    : is_compatible_reference_type_impl<BasicJsonType, CompatibleReferenceType> {};
+
 template<typename T1, typename T2>
 struct is_constructible_tuple : std::false_type {};

@@ -4180,11 +4202,14 @@ using is_usable_as_key_type = typename std::conditional <
 template<typename BasicJsonType, typename KeyTypeCVRef, bool RequireTransparentComparator = true,
         bool ExcludeObjectKeyType = RequireTransparentComparator, typename KeyType = uncvref_t<KeyTypeCVRef>>
 using is_usable_as_basic_json_key_type = typename std::conditional <
-    is_usable_as_key_type<typename BasicJsonType::object_comparator_t,
-    typename BasicJsonType::object_t::key_type, KeyTypeCVRef,
-    RequireTransparentComparator, ExcludeObjectKeyType>::value
-    && !is_json_iterator_of<BasicJsonType, KeyType>::value,
-    std::true_type,
+    (is_usable_as_key_type<typename BasicJsonType::object_comparator_t,
+     typename BasicJsonType::object_t::key_type, KeyTypeCVRef,
+     RequireTransparentComparator, ExcludeObjectKeyType>::value
+     && !is_json_iterator_of<BasicJsonType, KeyType>::value)
+#ifdef JSON_HAS_CPP_17
+    || std::is_convertible<KeyType, std::string_view>::value
+#endif
+    , std::true_type,
    std::false_type >::type;

 template<typename ObjectType, typename KeyType>
@@ -4385,7 +4410,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -4805,7 +4830,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -4829,7 +4854,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -4857,6 +4882,63 @@ NLOHMANN_JSON_NAMESPACE_END

 // #include <nlohmann/detail/meta/type_traits.hpp>

+// #include <nlohmann/detail/meta/logic.hpp>
+
+
+// #include <nlohmann/detail/macro_scope.hpp>
+
+
+NLOHMANN_JSON_NAMESPACE_BEGIN
+namespace detail
+{
+#ifdef JSON_HAS_CPP_17
+
+template<bool... Booleans>
+struct cxpr_or_impl : std::integral_constant < bool, (Booleans || ...) > {};
+
+template<bool... Booleans>
+struct cxpr_and_impl : std::integral_constant < bool, (Booleans &&...) > {};
+
+#else
+
+template<bool... Booleans>
+struct cxpr_or_impl : std::false_type {};
+
+template<bool... Booleans>
+struct cxpr_or_impl<true, Booleans...> : std::true_type {};
+
+template<bool... Booleans>
+struct cxpr_or_impl<false, Booleans...> : cxpr_or_impl<Booleans...> {};
+
+template<bool... Booleans>
+struct cxpr_and_impl : std::true_type {};
+
+template<bool... Booleans>
+struct cxpr_and_impl<true, Booleans...> : cxpr_and_impl<Booleans...> {};
+
+template<bool... Booleans>
+struct cxpr_and_impl<false, Booleans...> : std::false_type {};
+
+#endif
+
+template<class Boolean>
+struct cxpr_not : std::integral_constant < bool, !Boolean::value > {};
+
+template<class... Booleans>
+struct cxpr_or : cxpr_or_impl<Booleans::value...> {};
+
+template<bool... Booleans>
+struct cxpr_or_c : cxpr_or_impl<Booleans...> {};
+
+template<class... Booleans>
+struct cxpr_and : cxpr_and_impl<Booleans::value...> {};
+
+template<bool... Booleans>
+struct cxpr_and_c : cxpr_and_impl<Booleans...> {};
+
+}  // namespace detail
+NLOHMANN_JSON_NAMESPACE_END
+
 // #include <nlohmann/detail/string_concat.hpp>

 // #include <nlohmann/detail/value_t.hpp>
@@ -4886,7 +4968,8 @@ inline void from_json(const BasicJsonType& j, typename std::nullptr_t& n)
 }

 #ifdef JSON_HAS_CPP_17
-template<typename BasicJsonType, typename T>
+template < typename BasicJsonType, typename T,
+           typename std::enable_if < !nlohmann::detail::is_basic_json<T>::value, int >::type = 0 >
 void from_json(const BasicJsonType& j, std::optional<T>& opt)
 {
    if (j.is_null())
@@ -5278,13 +5361,36 @@ inline void from_json(const BasicJsonType& j, ArithmeticType& val)
    }
 }

-template<typename BasicJsonType, typename... Args, std::size_t... Idx>
-std::tuple<Args...> from_json_tuple_impl_base(BasicJsonType&& j, index_sequence<Idx...> /*unused*/)
+template<typename BasicJsonType, typename Type>
+detail::uncvref_t<Type> from_json_tuple_get_impl(BasicJsonType&& j, detail::identity_tag<Type> /*unused*/, detail::priority_tag<0> /*unused*/)
 {
-    return std::make_tuple(std::forward<BasicJsonType>(j).at(Idx).template get<Args>()...);
+    return std::forward<BasicJsonType>(j).template get<detail::uncvref_t<Type>>();
 }

-template<typename BasicJsonType>
+template<typename BasicJsonType, typename Type,
+         detail::enable_if_t<detail::is_compatible_reference_type<BasicJsonType, Type>::value, int> = 0>
+Type from_json_tuple_get_impl(BasicJsonType && j, detail::identity_tag<Type> /*unused*/, detail::priority_tag<1> /*unused*/)
+{
+    return std::forward<BasicJsonType>(j).template get_ref<Type>();
+}
+
+template<typename BasicJsonType, typename Type,
+         detail::enable_if_t<std::is_arithmetic<uncvref_t<Type>>::value, int> = 0>
+detail::uncvref_t<Type> from_json_tuple_get_impl(BasicJsonType && j, detail::identity_tag<Type> /*unused*/, detail::priority_tag<2> /*unused*/)
+{
+    return std::forward<BasicJsonType>(j).template get<detail::uncvref_t<Type>>();
+}
+
+template<std::size_t PTagValue, typename BasicJsonType, typename... Types>
+using tuple_type = std::tuple < decltype(from_json_tuple_get_impl(std::declval<BasicJsonType>(), detail::identity_tag<Types> {}, detail::priority_tag<PTagValue> {}))... >;
+
+template<std::size_t PTagValue, typename... Args, typename BasicJsonType, std::size_t... Idx>
+tuple_type<PTagValue, BasicJsonType, Args...> from_json_tuple_impl_base(BasicJsonType&& j, index_sequence<Idx...> /*unused*/)
+{
+    return tuple_type<PTagValue, BasicJsonType, Args...>(from_json_tuple_get_impl(std::forward<BasicJsonType>(j).at(Idx), detail::identity_tag<Args> {}, detail::priority_tag<PTagValue> {})...);
+}
+
+template<std::size_t PTagValue, typename BasicJsonType>
 std::tuple<> from_json_tuple_impl_base(BasicJsonType& /*unused*/, index_sequence<> /*unused*/)
 {
    return {};
@@ -5306,13 +5412,15 @@ inline void from_json_tuple_impl(BasicJsonType&& j, std::pair<A1, A2>& p, priori
 template<typename BasicJsonType, typename... Args>
 std::tuple<Args...> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::tuple<Args...>> /*unused*/, priority_tag<2> /*unused*/)
 {
-    return from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+    static_assert(cxpr_and<cxpr_or<cxpr_not<std::is_reference<Args>>, is_compatible_reference_type<BasicJsonType, Args>>...>::value,
+                  "Can not return a tuple containing references to types not contained in a Json, try Json::get_to()");
+    return from_json_tuple_impl_base<1, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
 }

 template<typename BasicJsonType, typename... Args>
 inline void from_json_tuple_impl(BasicJsonType&& j, std::tuple<Args...>& t, priority_tag<3> /*unused*/)
 {
-    t = from_json_tuple_impl_base<BasicJsonType, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+    t = from_json_tuple_impl_base<2, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
 }

 template<typename BasicJsonType, typename TupleRelated>
@@ -5421,7 +5529,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -5448,7 +5556,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -5472,7 +5580,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -6234,7 +6342,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -6346,7 +6454,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -6479,7 +6587,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -6508,7 +6616,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -7064,7 +7172,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -7083,7 +7191,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -7947,6 +8055,8 @@ class lexer : public lexer_base<BasicJsonType>
                            break;
                    }
                }
+
+                JSON_HEDLEY_UNREACHABLE();
            }

            // multi-line comments skip input until */ is read
@@ -7982,6 +8092,8 @@ class lexer : public lexer_base<BasicJsonType>
                            continue;
                    }
                }
+
+                JSON_HEDLEY_UNREACHABLE();
            }

            // unexpected character after reading '/'
@@ -9707,7 +9819,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -10263,6 +10375,25 @@ class binary_reader

    @return whether a valid CBOR value was passed to the SAX parser
    */
+
+    template<typename NumberType>
+    bool get_cbor_negative_integer()
+    {
+        NumberType number{};
+        if (JSON_HEDLEY_UNLIKELY(!get_number(input_format_t::cbor, number)))
+        {
+            return false;
+        }
+        const auto max_val = static_cast<NumberType>((std::numeric_limits<number_integer_t>::max)());
+        if (number > max_val)
+        {
+            return sax->parse_error(chars_read, get_token_string(),
+                                    parse_error::create(112, chars_read,
+                                            exception_message(input_format_t::cbor, "negative integer overflow", "value"), nullptr));
+        }
+        return sax->number_integer(static_cast<number_integer_t>(-1) - static_cast<number_integer_t>(number));
+    }
+
    bool parse_cbor_internal(const bool get_char,
                             const cbor_tag_handler_t tag_handler)
    {
@@ -10351,29 +10482,16 @@ class binary_reader
                return sax->number_integer(static_cast<std::int8_t>(0x20 - 1 - current));

            case 0x38: // Negative integer (one-byte uint8_t follows)
-            {
-                std::uint8_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
-            }
+                return get_cbor_negative_integer<std::uint8_t>();

            case 0x39: // Negative integer -1-n (two-byte uint16_t follows)
-            {
-                std::uint16_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
-            }
+                return get_cbor_negative_integer<std::uint16_t>();

            case 0x3A: // Negative integer -1-n (four-byte uint32_t follows)
-            {
-                std::uint32_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1) - number);
-            }
+                return get_cbor_negative_integer<std::uint32_t>();

            case 0x3B: // Negative integer -1-n (eight-byte uint64_t follows)
-            {
-                std::uint64_t number{};
-                return get_number(input_format_t::cbor, number) && sax->number_integer(static_cast<number_integer_t>(-1)
-                        - static_cast<number_integer_t>(number));
-            }
+                return get_cbor_negative_integer<std::uint64_t>();

            // Binary data (0x00..0x17 bytes follow)
            case 0x40:
@@ -12928,7 +13046,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -13474,7 +13592,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -13487,7 +13605,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -13646,7 +13764,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -14417,7 +14535,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -14552,7 +14670,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -14594,7 +14712,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -15589,7 +15707,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -15683,7 +15801,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -15709,7 +15827,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -17703,7 +17821,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
 // SPDX-FileCopyrightText: 2008, 2009 Björn Hoehrmann <bjoern@hoehrmann.de>
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -17728,7 +17846,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
 // SPDX-FileCopyrightText: 2009 Florian Loitsch <https://florian.loitsch.com/>
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -19745,7 +19863,7 @@ class serializer
            }
        };

-        JSON_ASSERT(byte < utf8d.size());
+        JSON_ASSERT(static_cast<std::size_t>(byte) < utf8d.size());
        const std::uint8_t type = utf8d[byte];

        codep = (state != UTF8_ACCEPT)
@@ -19823,7 +19941,7 @@ NLOHMANN_JSON_NAMESPACE_END
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -20372,7 +20490,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
    {
        basic_json result;

-        result["copyright"] = "(C) 2013-2025 Niels Lohmann";
+        result["copyright"] = "(C) 2013-2026 Niels Lohmann";
        result["name"] = "JSON for Modern C++";
        result["url"] = "https://github.com/nlohmann/json";
        result["version"]["string"] =
@@ -25506,7 +25624,7 @@ inline void swap(nlohmann::NLOHMANN_BASIC_JSON_TPL& j1, nlohmann::NLOHMANN_BASIC
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


@@ -25553,7 +25671,7 @@ inline void swap(nlohmann::NLOHMANN_BASIC_JSON_TPL& j1, nlohmann::NLOHMANN_BASIC
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


--- a/single_include/nlohmann/json_fwd.hpp
+++ b/single_include/nlohmann/json_fwd.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #ifndef INCLUDE_NLOHMANN_JSON_FWD_HPP_
@@ -21,7 +21,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT


--- a/tests/abi/config/config.hpp
+++ b/tests/abi/config/config.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/tests/abi/config/custom.cpp
+++ b/tests/abi/config/custom.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include "doctest_compatibility.h"
--- a/tests/abi/config/default.cpp
+++ b/tests/abi/config/default.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include "doctest_compatibility.h"
--- a/tests/abi/config/noversion.cpp
+++ b/tests/abi/config/noversion.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include "doctest_compatibility.h"
--- a/tests/abi/diag/diag.cpp
+++ b/tests/abi/diag/diag.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include "doctest_compatibility.h"
--- a/tests/abi/diag/diag.hpp
+++ b/tests/abi/diag/diag.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/tests/abi/diag/diag_off.cpp
+++ b/tests/abi/diag/diag_off.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #undef JSON_DIAGNOSTICS
--- a/tests/abi/diag/diag_on.cpp
+++ b/tests/abi/diag/diag_on.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #undef JSON_DIAGNOSTICS
--- a/tests/abi/inline_ns/use_current.cpp
+++ b/tests/abi/inline_ns/use_current.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include "doctest_compatibility.h"
--- a/tests/abi/inline_ns/use_v3_10_5.cpp
+++ b/tests/abi/inline_ns/use_v3_10_5.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include "doctest_compatibility.h"
--- a/tests/abi/main.cpp
+++ b/tests/abi/main.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
--- a/tests/benchmarks/src/benchmarks.cpp
+++ b/tests/benchmarks/src/benchmarks.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include <benchmark/benchmark.h>
--- a/tests/cmake_add_subdirectory/project/main.cpp
+++ b/tests/cmake_add_subdirectory/project/main.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include <nlohmann/json.hpp>
--- a/tests/cmake_fetch_content/project/main.cpp
+++ b/tests/cmake_fetch_content/project/main.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include <nlohmann/json.hpp>
--- a/tests/cmake_fetch_content2/project/main.cpp
+++ b/tests/cmake_fetch_content2/project/main.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include <nlohmann/json.hpp>
--- a/tests/cmake_import/project/main.cpp
+++ b/tests/cmake_import/project/main.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include <nlohmann/json.hpp>
--- a/tests/cmake_import_minver/project/main.cpp
+++ b/tests/cmake_import_minver/project/main.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include <nlohmann/json.hpp>
--- a/tests/cmake_target_include_directories/project/Bar.cpp
+++ b/tests/cmake_target_include_directories/project/Bar.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include "Bar.hpp"
--- a/tests/cmake_target_include_directories/project/Bar.hpp
+++ b/tests/cmake_target_include_directories/project/Bar.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include <nlohmann/json.hpp>
--- a/tests/cmake_target_include_directories/project/Foo.cpp
+++ b/tests/cmake_target_include_directories/project/Foo.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include "Foo.hpp"
--- a/tests/cmake_target_include_directories/project/Foo.hpp
+++ b/tests/cmake_target_include_directories/project/Foo.hpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #pragma once
--- a/tests/cmake_target_include_directories/project/main.cpp
+++ b/tests/cmake_target_include_directories/project/main.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include <nlohmann/json.hpp>
--- a/tests/cuda_example/json_cuda.cu
+++ b/tests/cuda_example/json_cuda.cu
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 #include <nlohmann/json.hpp>
--- a/tests/module_cpp20/main.cpp
+++ b/tests/module_cpp20/main.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 import nlohmann.json;
--- a/tests/src/fuzzer-driver_afl.cpp
+++ b/tests/src/fuzzer-driver_afl.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 /*
--- a/tests/src/fuzzer-parse_bjdata.cpp
+++ b/tests/src/fuzzer-parse_bjdata.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 /*
--- a/tests/src/fuzzer-parse_bson.cpp
+++ b/tests/src/fuzzer-parse_bson.cpp
@@ -3,7 +3,7 @@
 // |  |  |__   |  |  | | | |  version 3.12.0
 // |_____|_____|_____|_|___|  https://github.com/nlohmann/json
 //
-// SPDX-FileCopyrightText: 2013-2025 Niels Lohmann <https://nlohmann.me>
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
 // SPDX-License-Identifier: MIT

 /*
--- a/Show More
+++ b/Show More