diff --git a/.github/workflows/maven-build.yml b/.github/workflows/maven-build.yml
index 6a130f9..868ecef 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]
 
diff --git a/.github/workflows/maven-deploy.yml b/.github/workflows/maven-deploy.yml
index 080857a..e3730c2 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: |