diff --git a/.github/workflows/require-pr-porting-labels.yaml b/.github/workflows/require-pr-porting-labels.yaml
index 11f71d2229..95dcd9c392 100644
--- a/.github/workflows/require-pr-porting-labels.yaml
+++ b/.github/workflows/require-pr-porting-labels.yaml
@@ -6,6 +6,9 @@
 name: Ensure PR has required porting labels
 
 on:
+  pull_request:
+    branches:
+      - main
   pull_request_target:
     types:
       - opened