diff --git a/.Dockerfile b/.Dockerfile
index e9c44ef..aba8a16 100644
--- a/.Dockerfile
+++ b/.Dockerfile
@@ -5,7 +5,7 @@ ENV LANG C.UTF-8
 ENV LC_ALL C.UTF-8
 ENV PYTHONDONTWRITEBYTECODE 1
 ENV PYTHONFAULTHANDLER 1
-ENV FLASK_ENV production
+ENV FLASK_DEBUG production
 
 COPY *.whl .