diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 1dfd2f2..c16996b 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -26,6 +26,9 @@ jobs:
           dotnet-version: "8.0.x"
 
       - name: Repository quality gate
+        env:
+          BASE_REF: ${{ github.event.pull_request.base.sha || 'origin/dev' }}
+          HEAD_REF: ${{ github.event.pull_request.head.sha || github.sha }}
         run: bash scripts/governance-check.sh
 
       - name: Build Elastic Beanstalk source bundle