diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 87d94ef1a..84710abc5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,6 +1,9 @@
 name: CI
 
-on: [push]
+on:
+  push:
+  pull_request:
+    types: [opened, synchronize, reopened]
 
 env:
   COMPOSER_MEMORY_LIMIT: -1