diff --git a/Dockerfile b/Dockerfile
index 0ca2a37..6f25eca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -136,7 +136,7 @@ EXPOSE $JUPYTER_PORT
 
 
 
-RUN pip install ipywidgets voila jupyterlab-link-share 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