diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 845d9ad..0a6265d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,5 +1,5 @@
 name: Build
-on: [push]
+on: [push, pull_request]
 
 jobs:
   rubocop: