diff --git a/.github/workflows/pythonpublish.yml b/.github/workflows/pythonpublish.yml
index 63e888e6a1..1e55d43079 100644
--- a/.github/workflows/pythonpublish.yml
+++ b/.github/workflows/pythonpublish.yml
@@ -180,7 +180,7 @@ jobs:
           tags: ${{ steps.external-plugin-service-names.outputs.tags }}
           build-args: |
             VERSION=${{ needs.deploy.outputs.version }}
-          file: ./Dockerfile
+          file: ./Dockerfile.external-plugin-service
           cache-from: type=gha
           cache-to: type=gha,mode=max