diff --git a/.github/workflows/add-preview-links.yml b/.github/workflows/add-preview-links.yml
index de5640178f..10f3db4908 100644
--- a/.github/workflows/add-preview-links.yml
+++ b/.github/workflows/add-preview-links.yml
@@ -2,6 +2,8 @@ name: Add preview links
 
 on:
   pull_request_target:
+    branches:
+      - main
     types:
       - opened
       - edited