diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ce7c784..25705a7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -32,6 +32,13 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: '21'
+          cache: maven
+
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with: