diff --git a/.gitea/workflows/demo.yaml b/.gitea/workflows/demo.yaml
index 93ef7b7..8cb63c9 100644
--- a/.gitea/workflows/demo.yaml
+++ b/.gitea/workflows/demo.yaml
@@ -98,6 +98,10 @@ jobs:
           check-latest: true
           cache: 'maven'
           # cache-dependency-path: 'sub-project/pom.xml' # optional
+      - name: Set up Maven
+        uses: stCarolas/setup-maven@v5
+        with:
+          maven-version: 3.9.11
       - name: Build with Maven
         run: |
           echo "mvn clean install -DskipTests && mvn -B package --file pom.xml"