diff --git a/src/Dockerfile.usefulpackages b/src/Dockerfile.usefulpackages
index 380e474..75e705a 100644
--- a/src/Dockerfile.usefulpackages
+++ b/src/Dockerfile.usefulpackages
@@ -26,11 +26,19 @@ RUN pip install --no-cache-dir jupyter-tabnine==1.1.0  --user && \
   jupyter serverextension enable --py jupyter_tabnine --user
 RUN pip install --no-cache-dir jupyter_contrib_nbextensions \
   jupyter_nbextensions_configurator rise
-#  jupyter nbextension enable codefolding/main
-RUN jupyter labextension install @ijmbarr/jupyterlab_spellchecker
-#RUN conda install -c anaconda caffe-gpu
+
+RUN pip install jupyterlab-git && \
+    pip install black && \
+    jupyter nbextension install https://github.com/drillan/jupyter-black/archive/master.zip --user && \
+    jupyter nbextension enable jupyter-black-master/jupyter-black
+RUN pip install lckr-jupyterlab-variableinspector
+RUN jupyter labextension install @jupyterlab/toc
+RUN jupyter labextension install jupyterlab_voyager
 RUN conda install -c conda-forge theano
 RUN conda install -c conda-forge gym
+
+#  jupyter nbextension enable codefolding/main
+RUN jupyter labextension install @ijmbarr/jupyterlab_spellchecker
 #RUN pip install --no-cache-dir nupic
 RUN fix-permissions /home/$NB_USER