diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 65a21cf..910dc4c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java_version: [ '17', '20' ]
+        java_version: [ '17', '21' ]
     steps:
       # Check out the project
       - uses: actions/checkout@v3