diff --git a/.github/workflows/lint_python.yml b/.github/workflows/lint_python.yml
index 53c0c67..d082fa3 100644
--- a/.github/workflows/lint_python.yml
+++ b/.github/workflows/lint_python.yml
@@ -1,5 +1,9 @@
 name: lint_python
-on: [pull_request, push]
+on:
+  pull_request:
+    branches: [master]
+  push:
+    branches: [master]
 jobs:
   lint_python:
     runs-on: ubuntu-latest