diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 4d6e222..87878da 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,5 +1,9 @@
 name: Test
-on: [push]
+on:
+  pull_request:
+  push:
+    branches:
+      - master
 jobs:
   pre-commit:
     runs-on: ubuntu-latest