diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 14579bc..e134e2b 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        java: [17]
+        java: [17,21]
     name: Build and Test Plugin Template
     runs-on: ${{ matrix.os }}
     permissions: