diff --git a/src/Dockerfile.usefulpackages b/src/Dockerfile.usefulpackages
index 1aab444..55cf701 100644
--- a/src/Dockerfile.usefulpackages
+++ b/src/Dockerfile.usefulpackages
@@ -31,7 +31,7 @@ RUN jupyter labextension install @ijmbarr/jupyterlab_spellchecker
 #RUN conda install -c anaconda caffe-gpu
 RUN conda install -c conda-forge theano
 RUN conda install -c conda-forge gym
-RUN pip install nupic
+RUN pip install --no-cache-dir nupic
 RUN fix-permissions /home/$NB_USER
 
 # Switch back to jovyan to avoid accidental container runs as root