diff --git a/.github/workflows/differ.yml b/.github/workflows/differ.yml
index 107dffc..9117e02 100644
--- a/.github/workflows/differ.yml
+++ b/.github/workflows/differ.yml
@@ -3,6 +3,7 @@ name: Differ
 on:
   workflow_run:
     workflows: [Vib Build]
+    branches: [main]
     types:
       - completed