diff --git a/.github/workflows/pytests.yml b/.github/workflows/pytests.yml
index 07bad2e..fc3a35f 100644
--- a/.github/workflows/pytests.yml
+++ b/.github/workflows/pytests.yml
@@ -2,6 +2,8 @@ name: Python matrix CI
 
 on:
   push:
+    branches:
+      - main
   pull_request:
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}