diff --git a/.github/workflows/maven-ci.yml b/.github/workflows/maven-ci.yml
index 2537986c..ef4a67ab 100644
--- a/.github/workflows/maven-ci.yml
+++ b/.github/workflows/maven-ci.yml
@@ -3,7 +3,11 @@
 
 name: build
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 
 jobs:
   build: