diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 34d7c041..07bf4e6a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,6 +1,10 @@
 name: Tests (PHP)
 
-on: [push]
+on:
+  pull_request:
+    types: 
+      - ready_for_review
+      - review_requested
 
 jobs:
   tests: