diff --git a/.github/workflows/preview.yml b/.github/workflows/preview.yml
index 9855dc8818..b5c4d873ee 100644
--- a/.github/workflows/preview.yml
+++ b/.github/workflows/preview.yml
@@ -7,6 +7,8 @@ on:
       - reopened
       - synchronize
       - closed
+  branches:
+    - main
 
 concurrency: preview-${{ github.ref }}