diff --git a/.github/workflows/publish-docker.yml b/.github/workflows/publish-docker.yml
index 356031d..b221e8b 100644
--- a/.github/workflows/publish-docker.yml
+++ b/.github/workflows/publish-docker.yml
@@ -71,7 +71,7 @@ jobs:
         uses: docker/build-push-action@0565240e2d4ab88bba5387d719585280857ece09 # v5.0.0
         with:
           context: backend
-          push: startsWith(github.event.ref, 'refs/tags/')
+          push: ${{ startsWith(github.event.ref, 'refs/tags/') }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha