diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index 38274a1..aa1d53d 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -5,6 +5,12 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
+      - name: Setup Java
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+
       - name: Check out
         uses: actions/checkout@v4