diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 6da991a..3797075 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -15,11 +15,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - name: Set up JDK 18
-        uses: actions/setup-java@v1
+      - uses: actions/checkout@v4
+      - name: Set up JDK 21
+        uses: actions/setup-java@v2
         with:
-          java-version: 18
+          java-version: 21
       - name: Build Java examples with Maven
         run: mvn -B verify --file java-samples/pom.xml
       - name: Build Kotlin examples with Maven