diff --git a/Dockerfile b/Dockerfile
index 98ecbd0..71e875f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -30,6 +30,7 @@ WORKDIR /app
 RUN pip install --upgrade pip
 RUN pip install gunicorn
 RUN pip install wheel
+RUN pip install flit
 RUN flit install --pth-file
 
 CMD ["gunicorn", "--paster", "/app/production.ini", "-b", "0.0.0.0:8000"]