diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a2b3f10e6..64c074eb1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,7 +1,13 @@
 ---
 name: Java CI
 
-on: [push]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
 
 jobs:
   test:
@@ -22,6 +28,4 @@ jobs:
           java-version: ${{ matrix.java }}
           distribution: 'zulu'
       - name: Verify with Maven
-        run: mvn verify -B --file pom.xml
-
-...
+        run: mvn verify -B