diff --git a/.github/workflows/tox.yml b/.github/workflows/tox.yml
index a9588ca..edeee10 100644
--- a/.github/workflows/tox.yml
+++ b/.github/workflows/tox.yml
@@ -1,6 +1,6 @@
 name: Tox
 
-on: [push]
+on: [push, pull_request]
 
 jobs:
   build: