diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9f18c5f..f94cb52 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,6 +1,5 @@
 name: 'build and deploy Speckle functions'
-on: # rebuild any PRs and any branch changes
-  pull_request:
+on: # rebuild any any `main` branch changes
   push:
     branches:
       - main