diff --git a/.github/workflows/maven-build.yml b/.github/workflows/maven-build.yml
index 4714b60..5e0614a 100644
--- a/.github/workflows/maven-build.yml
+++ b/.github/workflows/maven-build.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        java: [11, 17]
+        java: [11, 17, 21]
         os: [ubuntu-latest]
         distribution: [temurin]
         include:
diff --git a/.github/workflows/maven-deploy.yml b/.github/workflows/maven-deploy.yml
index 83e1059..763171a 100644
--- a/.github/workflows/maven-deploy.yml
+++ b/.github/workflows/maven-deploy.yml
@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Configure GIT
         run: |
diff --git a/.github/workflows/release-from-tag.yml b/.github/workflows/release-from-tag.yml
index 8149739..35e68c3 100644
--- a/.github/workflows/release-from-tag.yml
+++ b/.github/workflows/release-from-tag.yml
@@ -12,7 +12,7 @@ jobs:
     permissions:
       contents: write
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: ncipollo/release-action@v1
       with:
         body: 'Changes: https://wcm.io/tooling/maven/plugins/wcmio-content-package-maven-plugin/changes-report.html'