diff --git a/.github/workflows/backend-build.yml b/.github/workflows/backend-build.yml
index 7891178..6c614d2 100644
--- a/.github/workflows/backend-build.yml
+++ b/.github/workflows/backend-build.yml
@@ -30,7 +30,7 @@ jobs:
       # Setup Java (GraalVM as specified in original, potentially for build performance/features)
       # Enables Gradle caching for faster subsequent builds
       - name: Set up JDK 21 (GraalVM)
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v6
         with:
           java-version: '21'
           distribution: 'graalvm' # Using GraalVM as specified
@@ -70,7 +70,7 @@ jobs:
       # Setup Java (Temurin is sufficient and common for this task)
       # Re-enable Gradle caching for this job as well
       - name: Set up JDK 21 (Temurin)
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v6
         with:
           java-version: '21'
           distribution: 'temurin' # Standard Temurin JDK is fine here