diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 668a55195..5d5240a86 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,6 +1,10 @@
 name: CI
 
-on: [push]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 
 jobs:
   Macos: