diff --git a/docker/Dockerfile b/docker/Dockerfile
index 6d3d5976..bca5405a 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
 FROM ubuntu:bionic-20191202
 RUN apt-get update && apt-get install --yes --no-install-recommends python3-pip python3-setuptools libglib2.0-0
-RUN pip3 install --upgrade pip
-RUN pip3 install procgen
+RUN pip3 install --no-cache-dir --upgrade pip
+RUN pip3 install --no-cache-dir procgen