diff --git a/.github/workflows/prefect-deploy.yml b/.github/workflows/prefect-deploy.yml
index d8a05e4..5a75dc9 100644
--- a/.github/workflows/prefect-deploy.yml
+++ b/.github/workflows/prefect-deploy.yml
@@ -27,6 +27,7 @@ jobs:
         uses: docker/build-push-action@v5
         with:
           context: ./backend
+          file: ./backend/Dockerfile.prefect
           push: true
           tags: ${{ github.repository_owner }}/${{ env.PROJECT_NAME }}:prefect-${{ github.sha }}
           platforms: linux/arm64,linux/amd64