diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 4bed610e..3be54ae5 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -13,15 +13,15 @@ jobs:
   build:
     strategy:
       matrix:
-        java: [8, 11, 17]
+        java: [8, 11, 17, 21]
         os: [ubuntu-latest, windows-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     env:
       maven_commands: test # default is install
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up JDK ${{ matrix.java }}
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           java-version: ${{ matrix.java }}
           distribution: 'zulu'