diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7edb0be..acf7261 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,17 +1,23 @@
 name: CI
 
-on: [push]
+on:
+  push:
+    branches:
+      - '**'
+  pull_request:
+    branches:
+      - '**'
 
 jobs:
   build:
     runs-on: ubuntu-latest
-
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     steps:
       - uses: actions/checkout@v2
       - name: Set up JDK 17
         uses: actions/setup-java@v2
         with:
           java-version: '17'
-          distribution: 'adopt'
+          distribution: 'temurin'
       - name: Build with Maven
-        run: mvn --batch-mode verify
+        run: ./mvnw --batch-mode clean verify