diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3fd2c21a..6c218193 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,7 +15,7 @@ jobs:
       - uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: '17'
+          java-version: '21'
 
       - name: Build and test app
         run: ./gradlew build
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 43d6b512..40188f4e 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -19,7 +19,7 @@ jobs:
       - uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: '17'
+          java-version: '21'
 
       - name: Import GPG key for git-secret
         run: echo "${{ secrets.GPG_PRIVATE_KEY }}" | gpg --import --batch --yes