diff --git a/.github/workflows/clang-format.yml b/.github/workflows/clang-format.yml
index ba594f5..8715fec 100644
--- a/.github/workflows/clang-format.yml
+++ b/.github/workflows/clang-format.yml
@@ -1,6 +1,10 @@
 name: run-clang-format
 
-on: [push]
+on:
+  push:
+    branches:
+      - main
+  pull_request:
 
 jobs:
   build: