diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index dfca17dbb..8ac712f97 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -157,6 +157,9 @@ updates:
       postgres:
         patterns:
           - "docker.io/library/postgres*"
+      greenmail:
+        patterns:
+          - "docker.io/greenmail*"
   - package-ecosystem: "pre-commit" # See documentation for possible values
     directory: "/" # Location of package manifests
     schedule:
diff --git a/docker/compose/docker-compose.ci-test.yml b/docker/compose/docker-compose.ci-test.yml
index 545019eec..5cb4bcd39 100644
--- a/docker/compose/docker-compose.ci-test.yml
+++ b/docker/compose/docker-compose.ci-test.yml
@@ -18,13 +18,13 @@ services:
       - "--log-level=warn"
       - "--log-format=text"
   tika:
-    image: docker.io/apache/tika:latest
+    image: docker.io/apache/tika:3.2.3.0
     hostname: tika
     container_name: tika
     network_mode: host
     restart: unless-stopped
   greenmail:
-    image: greenmail/standalone:2.1.8
+    image: docker.io/greenmail/standalone:2.1.8
     hostname: greenmail
     container_name: greenmail
     environment: