diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 645097c5..a4ffaa50 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -49,7 +49,7 @@ jobs:
           DATABASE_URL: postgres://postgres:secret@localhost:5432/postgres
 
       - name: lint generated project (and its template)
-        run: cd testproject && make lint
+        run: cd testproject && poetry install && make lint
 
   build-docker-image:
     needs: bootstrap