diff --git a/.github/workflows/build_primary_wheels.yml b/.github/workflows/build_primary_wheels.yml
index ec3881d..7cf25a4 100644
--- a/.github/workflows/build_primary_wheels.yml
+++ b/.github/workflows/build_primary_wheels.yml
@@ -1,6 +1,12 @@
 name: Build primary wheels
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    paths:
+      - '**'
 
 jobs:
   build_wheels: