diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index c62a381..7ea2978 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -1,6 +1,10 @@
 name: tests
 
-on: [push]
+on:
+  push:
+  pull_request:
+    branches:
+      - main
 
 jobs:
   test: