diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 31d21b8..edaef73 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,4 +1,8 @@
-on: [push]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 
 jobs:
   mediawiki-extension-action-sqlite: