diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 6aede83..74e6cfc 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -1,7 +1,13 @@
-on: [push]
-
 name: Continuous integration
 
+on:
+  push:
+    branches:
+    - main
+  pull_request:
+    branches:
+    - main
+
 jobs:
   check:
     name: Check