diff --git a/Dockerfile b/Dockerfile
index 6f25eca..8f52a44 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -112,17 +112,18 @@ RUN CONDA_OVERRIDE_CUDA="11.2" conda install tensorflow-gpu==2.11.0 -c conda-for
 RUN CONDA_OVERRIDE_CUDA="11.2" conda install -c conda-forge pytorch-gpu
 WORKDIR /tmp
 RUN mamba install --quiet --yes \
-    'notebook' \
-    'jupyterhub' \
+    'mathjax' \
+    'voila' \
     'jupyterlab-git' \
     'numba' \
     'cython' \
-    'matplotlib-base' \
+    'matplotlib' \
+    'jupyter-collaboration' \
     'pandas' \
     'scipy' \
     'scikit-image' \
     'scikit-learn' \
-    'jupyterlab' && \
+    'ipywebrtc' && \
     jupyter notebook --generate-config && \
     mamba clean --all -f -y && \
     npm cache clean --force && \
@@ -136,7 +137,7 @@ EXPOSE $JUPYTER_PORT
 
 
 
-RUN pip install ipywidgets voila jupyter-collaboration mathjax
+#RUN pip install ipywidgets voila jupyter-collaboration mathjax
 RUN pip install --extra-index-url https://git.sandbox.iuk.hdm-stuttgart.de/api/packages/grosse/pypi/simple jupyterlab-sandbox-theme
 RUN pip install --extra-index-url https://git.sandbox.iuk.hdm-stuttgart.de/api/packages/grosse/pypi/simple jupyterlab-data-pool
 RUN pip install --extra-index-url https://git.sandbox.iuk.hdm-stuttgart.de/api/packages/grosse/pypi/simple jupyterlab-training