diff --git a/Dockerfile b/Dockerfile
index 37e012b..d39fa5c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,6 +3,6 @@ FROM alpine:latest
 RUN apk add --no-cache python3 py3-lxml py3-gunicorn py3-pip py3-wheel git
 
 ADD . /app
-RUN pip3 install /app
+RUN pip3 install --no-cache-dir /app
 
 CMD gunicorn --bind 0.0.0.0:8080 -w 4 --preload morss