diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2373f43..36c1c51 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java-version: [8, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]
+        java-version: [8, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21]
     steps:
       - name: Checkout
         uses: actions/checkout@v4