diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5c5e0a6..2c21f1d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -17,7 +17,7 @@ jobs:
       - name: setup jdk
         uses: actions/setup-java@v4
         with:
-          java-version: '23'
+          java-version: '21'
           distribution: 'microsoft'
       - name: make gradle wrapper executable
         run: chmod +x ./gradlew