diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 407749a8a..0e1946805 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -1,6 +1,10 @@
 name: Java CI
 
-on: [push]
+on:
+  push:
+  pull_request:
+    branches:
+      - master
 
 jobs:
   build_and_test: