diff --git a/.github/workflows/diff.yml b/.github/workflows/diff.yml
index c67bff44a..0b84f915b 100644
--- a/.github/workflows/diff.yml
+++ b/.github/workflows/diff.yml
@@ -25,6 +25,6 @@ jobs:
           curl -X POST \
              --fail \
              -F token=${{ secrets.GITLAB_CI_TOKEN }} \
-             -F ref=add/pipeline \
+             -F ref=main \
              -F "variables[BRANCH]=${{ steps.extract_branch.outputs.branch }}" \
              https://git.vshn.net/api/v4/projects/58084/trigger/pipeline