diff --git a/.github/workflows/code-check.yml b/.github/workflows/code-check.yml
index 71d99f1f..02b90cba 100644
--- a/.github/workflows/code-check.yml
+++ b/.github/workflows/code-check.yml
@@ -1,6 +1,12 @@
 name: code-check
 
-on: [push]
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
 
 jobs:
   pre-commit: