diff --git a/.github/workflows/spec_update.yml b/.github/workflows/spec_update.yml
index 72220fb81..48d86c2e9 100644
--- a/.github/workflows/spec_update.yml
+++ b/.github/workflows/spec_update.yml
@@ -138,6 +138,6 @@ jobs:
 
       - name: Enable Pull Request Automerge
         if: steps.create-pr.outputs.pull-request-number
-        run: gh pr merge --merge --auto "${{ steps.create-pr.outputs.pull-request-number }}"
+        run: gh pr merge --squash --auto "${{ steps.create-pr.outputs.pull-request-number }}"
         env:
           GH_TOKEN: ${{ steps.app-token.outputs.token }}