diff --git a/docs/types-and-platforms/mod-platforms/gtnh.md b/docs/types-and-platforms/mod-platforms/gtnh.md
index 8b9a6266..b22ae637 100644
--- a/docs/types-and-platforms/mod-platforms/gtnh.md
+++ b/docs/types-and-platforms/mod-platforms/gtnh.md
@@ -12,7 +12,7 @@ Configuration options with defaults:
 
 ## Set Modpack version
 
-As GTNH is a Minecraft 1.7.10 modpack, when using it your minecraft version is set to 1.7.10 by default. The [modpack version](https://www.gtnewhorizons.com/downloads/) can be selected by setting `GTNH_PACK_VERSION` to `latest`, `latest-dev` or any specific version number. `latest` will automatically select the latest full release version available and deploy the server with it (Note: this will also automatically update the server on startup). `latest-dev` does the same but selects the latest version marked as beta or RC (it won't select a full release version even if a newer exist). The third (and recommended) option is setting the server to a specific version like `2.8.1` to manage updates manually.
+As GTNH is a Minecraft 1.7.10 modpack, when using it your minecraft version is set to 1.7.10 by default. The [modpack version](https://www.gtnewhorizons.com/downloads/) can be selected by setting `GTNH_PACK_VERSION` to `latest`, `latest-beta` (formerly `latest-dev`) or any specific version number. `latest` will automatically select the latest full release version available and deploy the server with it (Note: this will also automatically update the server on startup). `latest-beta` does the same but selects the latest version marked as beta or RC (it won't select a full release version even if a newer exist). The third (and recommended) option is setting the server to a specific version like `2.8.1` to manage updates manually.
 
 > To actively prevent an update from happening you can set the environment variable `SKIP_GTNH_UPDATE_CHECK` to true this will prevent any update check from running, but will also prevent the server install from running, so just set it after the initial setup.
 
@@ -52,3 +52,11 @@ To deliver the intended GTNH by default, when running a GTNH server, the followi
 With java 17+ the server starts with `-Dfml.readTimeout=180 @java9args.txt -jar lwjgl3ify-forgePatches.jar`. 
 
 With java 8 the server stars with `-XX:+UseStringDeduplication -XX:+UseCompressedOops -XX:+UseCodeCacheFlushing -Dfml.readTimeout=180 -jar forge-1.7.10-10.13.4.1614-1.7.10-universal.jar`
+
+## Developer Versions
+
+To run the nightly developer builds of GTNH, set the environment variable `GTNH_USE_DAILY_BUILD` to true and set `GTNH_PACK_VERSION` either to `latest` or a specific run ID of the build workflow. The run ID can be found in the [GTNH GitHub Actions](https://github.com/GTNewHorizons/DreamAssemblerXXL/actions) page of the DreamAssemblerXXL repository. The run ID is the number in the URL of the workflow run, for example `123456789`. 
+
+Since downloads require authentication, you will also need to set the environment variable `GH_TOKEN` to a valid GitHub Personal Access Token with `public_repo` scope. You can create a token in your [GitHub settings](https://github.com/settings/tokens) page. Be sure to keep your token secret and do not share it with anyone. The token is only used to download the developer builds and is not stored anywhere in the server (except in the environment variables). 
+
+Keep in mind that developer builds are not stable and may contain bugs or incomplete features. Use them at your own risk. It is recommended to use the latest stable release for production servers!
diff --git a/scripts/start-deployGTNH b/scripts/start-deployGTNH
index 1a18b027..624b67fb 100755
--- a/scripts/start-deployGTNH
+++ b/scripts/start-deployGTNH
@@ -7,11 +7,13 @@
 function getGTNHdownloadPath(){
   gtnh_download_path=""
   local release_object=""
-  local current_java_version=""
-  current_java_version=$(mc-image-helper java-release)
 
   # Select release JSON object
-  if [ "$GTNH_PACK_VERSION" == "latest-dev" ]; then
+  # latest-dev will be removed in the future, but is still supported for now.
+  if [ "$GTNH_PACK_VERSION" == "latest-dev" ] || [ "$GTNH_PACK_VERSION" == "latest-beta" ]; then
+    if [ "$GTNH_PACK_VERSION" == "latest-dev" ]; then
+      logWarning "GTNH_PACK_VERSION=latest-dev is deprecated and will be removed in the future."
+    fi
     if ! release_object="$(
       curl -fsSL "https://downloads.gtnewhorizons.com/versions.json" \
         | jq -r '(.versions // .)|to_entries|sort_by(.value.releaseDate)|map(select(.value.title=="Beta release"))|.[-1]'
@@ -46,23 +48,18 @@ function getGTNHdownloadPath(){
   fi
   
   # Select compatible server files for java version
-  if (( current_java_version == 8 )); then
+  if (( java_version == 8 )); then
     gtnh_download_path=$(jq -r '.value.server.java8Url' <<< "$release_object")
     log "Use GTNH Server Java 8 release."
   
-  elif (( current_java_version >= 17 )); then
-    if (( current_java_version > $(jq '.value.maxJavaVersion' <<< "$release_object") )); then
-      logError "Container Java version $current_java_version is not supported by GTNH. Try an older release."
+  elif (( java_version >= 17 )); then
+    if (( java_version > $(jq '.value.maxJavaVersion' <<< "$release_object") )); then
+      logError "Container Java version $java_version is not supported by GTNH. Try an older release."
       exit 1
     fi
   
     gtnh_download_path=$(jq -r '.value.server.java17_2XUrl' <<< "$release_object")
     log "Use GTNH Server Java 17+ release."
-  
-  else
-    logError "Container Java version $current_java_version is not supported by GTNH."
-    exit 1
-  
   fi
   
   if [[ -z $gtnh_download_path ]]; then
@@ -73,6 +70,56 @@ function getGTNHdownloadPath(){
 
 }
 
+function getGTNHdownloadOptions(){
+  # Used for GTNH daily build downloads, to pass additional options to the download command.
+  gtnh_download_options=()
+  # Used for dryrun check
+  gtnh_download_path=""
+
+  # Check if GH_TOKEN is set for daily builds
+  if [ -z "$GH_TOKEN" ]; then
+    logError "GH_TOKEN environment variable must be set to use daily builds."
+    exit 1
+  fi
+
+  gtnh_download_options+=( --output-filename )
+
+  # prepare download options as an array to safely append patterns
+  if [ "$GTNH_PACK_VERSION" == "latest" ] || [ "$GTNH_PACK_VERSION" == "latest-dev" ]; then
+    if [ "$GTNH_PACK_VERSION" == "latest-dev" ]; then
+      logWarning "GTNH_PACK_VERSION=latest-dev is deprecated and will be removed in the future."
+    fi
+    gtnh_download_options+=( --workflow=daily-modpack-build.yml )
+    log "Using latest daily build for GTNH server files."
+  elif [ "$GTNH_PACK_VERSION" == "latest-beta" ]; then
+    gtnh_download_options+=( --workflow=daily-modpack-build.yml )
+    logWarning "Using daily build instead of latest beta release for GTNH server files. If this is not intended, set GTNH_USE_DAILY_BUILD=false to use the latest beta release instead."
+  else
+    gtnh_download_options+=( --run-id="$GTNH_PACK_VERSION" )
+    log "Using specific daily build run ID $GTNH_PACK_VERSION for GTNH server files."
+  fi
+
+  # Select compatible server files for java version
+  if (( java_version == 8 )); then
+    log "Use GTNH Server Java 8 release."
+    gtnh_download_options+=( --artifact-pattern='GTNH-daily-\d{4}-\d{2}-\d{2}\+\d+-server-java8\.zip' )
+  
+  elif (( java_version >= 17 )); then
+    log "Use GTNH Server Java 17+ release."
+    gtnh_download_options+=( --artifact-pattern='GTNH-daily-\d{4}-\d{2}-\d{2}\+\d+-server-java17-\d{2}\.zip' )
+  fi
+
+  debug "GTNH daily build download options: ${gtnh_download_options[*]}"
+
+  if ! gtnh_download_path=$(mc-image-helper github download-artifact --no-download "${gtnh_download_options[@]}" GTNewHorizons/DreamAssemblerXXL); then
+    logError "Failed to find a matching daily build for GTNH server files with the specified options."
+    exit 1
+  fi
+
+  debug "GTNH daily build download path: $gtnh_download_path"
+  
+}
+
 function deleteGTNHbackup(){
   log "Start deleting all config backups"
   if ! find . -maxdepth 1 -type d -name 'gtnh-upgrade-*' -exec rm -rf {} + ; then
@@ -81,24 +128,33 @@ function deleteGTNHbackup(){
 }
 
 function downloadGTNH(){
-  local gtnh_download=""
+  gtnh_download=""
   base_dir=/data/.tmp/gtnh_base
 
   debug "Creating temporary /data/.tmp/packs folder for GTNH download"
   mkdir -p /data/.tmp/packs
   trap 'rm -rf /data/.tmp' EXIT
-  
-  log "Downloading $gtnh_download_path."
-  if ! gtnh_download=$(mc-image-helper get -o /data/.tmp/packs --output-filename --skip-up-to-date "$gtnh_download_path"); then
-    logError "Failed to download $gtnh_download_path"
-    exit 1
-  fi
-  debug "Downloaded GTNH server files to $gtnh_download"
-
-  # Unpacking Server files into temporary directory
-  log "Unpacking Server Files into $base_dir"
   mkdir -p "${base_dir}"
-  extract "${gtnh_download}" "${base_dir}"
+  
+  if isTrue "$GTNH_USE_DAILY_BUILD"; then
+  log "Downloading Daily Build for GTNH server files."
+    # gtnh_download_options is injecting download parameters -> (--workflow or --run-id) and --artifact-pattern
+    if ! gtnh_download=$(mc-image-helper github download-artifact -o=$base_dir --unzip "${gtnh_download_options[@]}" GTNewHorizons/DreamAssemblerXXL); then
+      logError "Failed to download Daily Build for GTNH server files."
+      exit 1
+    fi
+  else 
+    log "Downloading $gtnh_download_path."
+    if ! gtnh_download=$(mc-image-helper get -o /data/.tmp/packs --output-filename --skip-up-to-date "$gtnh_download_path"); then
+      logError "Failed to download $gtnh_download_path"
+      exit 1
+    fi
+    debug "Downloaded GTNH server files to $gtnh_download"
+
+    # Unpacking Server files into temporary directory
+    log "Unpacking Server Files into $base_dir"
+    extract "${gtnh_download}" "${base_dir}"
+  fi
 
   # Remove any eula file since container manages it
   debug "Removing eula.txt from $base_dir"
@@ -209,16 +265,23 @@ function handleGTNH() {
   : "${GTNH_PACK_VERSION:=latest}"
   : "${GTNH_DELETE_BACKUPS:=false}"
   : "${SKIP_GTNH_UPDATE_CHECK:=false}"
-  debug "GTNH VAR CHECK: GTNH_DELETE_BACKUPS=$GTNH_DELETE_BACKUPS, GTNH_PACK_VERSION=$GTNH_PACK_VERSION, TYPE=$TYPE, SKIP_GTNH_UPDATE_CHECK=$SKIP_GTNH_UPDATE_CHECK"
+  : "${GTNH_USE_DAILY_BUILD:=false}"
+  
+  debug "GTNH VAR CHECK: GTNH_DELETE_BACKUPS=$GTNH_DELETE_BACKUPS, GTNH_PACK_VERSION=$GTNH_PACK_VERSION,  TYPE=$TYPE, SKIP_GTNH_UPDATE_CHECK=$SKIP_GTNH_UPDATE_CHECK, GTNH_USE_DAILY_BUILD=$GTNH_USE_DAILY_BUILD"
 
   if isTrue "$GTNH_DELETE_BACKUPS"; then
     deleteGTNHbackup
   fi
 
-  if [[ -n "$GTNH_PACK_VERSION" ]] && isFalse "$SKIP_GTNH_UPDATE_CHECK" ; then
+  if [[ -n "$GTNH_PACK_VERSION" ]] && isFalse "$SKIP_GTNH_UPDATE_CHECK"; then
     
-    getGTNHdownloadPath
-    log "Server files located! Will proceed update $gtnh_download_path."
+    if isFalse "$GTNH_USE_DAILY_BUILD"; then
+      getGTNHdownloadPath
+      log "Server files located! Will proceed update $gtnh_download_path."
+    else
+      getGTNHdownloadOptions
+      log "Will proceed update with daily build options: ${gtnh_download_options[*]}."
+    fi
 
 
     # Decide if update or install is needed or not.
@@ -239,7 +302,7 @@ function handleGTNH() {
       fi
 
       # Update .gtnh-version
-      basename "$gtnh_download_path" > /data/.gtnh-version
+      basename "$gtnh_download" > /data/.gtnh-version
 
       # Cleaning up temporary files
       rm -rf /data/.tmp