diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b960bfe393..8ede6da0b2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,5 +1,8 @@
 name: CI
-on: [push, pull_request]
+on:
+  push:
+    branches: [ master ]
+  pull_request:
 permissions:
   contents: read # to fetch code (actions/checkout)
 jobs: