diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index c0118e0..1013949 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -8,6 +8,13 @@ on:
       - 'phpunit.xml.dist'
       - 'composer.json'
       - 'composer.lock'
+  pull_request:
+    paths:
+      - '**.php'
+      - '.github/workflows/run-tests.yml'
+      - 'phpunit.xml.dist'
+      - 'composer.json'
+      - 'composer.lock'
 
 jobs:
   test: