diff --git a/Dockerfile b/Dockerfile
index 8971c7e..21dd7a8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,11 +6,9 @@ RUN apt-get update
 USER main
 
 # Python 2
-RUN conda install jupyter matplotlib numexpr numpy pandas Pillow protobuf psutil scikit-learn scipy sympy wheel
 RUN conda install -c jjhelmus tensorflow=0.10.0
-RUN conda install https://github.com/ipython-contrib/IPython-notebook-extensions/archive/master.zip
+RUN conda install -c conda-forge jupyter_contrib_nbextensions
 
 # Python 3
-RUN conda install -n python3 jupyter matplotlib numexpr numpy pandas Pillow protobuf psutil scikit-learn scipy sympy wheel
 RUN conda install -n python3 -c jjhelmus tensorflow=0.10.0
-RUN conda install -n python 3 https://github.com/ipython-contrib/IPython-notebook-extensions/archive/master.zip
+RUN conda install -n python3 -c conda-forge jupyter_contrib_nbextensions