diff --git a/Dockerfile b/Dockerfile
index 1453220..3ee3884 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,9 @@
-ARG LAB_IMAGE=jupyter/datascience-notebook:lab-3.5.2
+ARG LAB_IMAGE=jupyter/datascience-notebook:lab-3.4.3
 
 FROM ${LAB_IMAGE}
 RUN echo "install custom extensions"
 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
-RUN pip install --extra-index-url https://git.sandbox.iuk.hdm-stuttgart.de/api/packages/grosse/pypi/simple jupyterlab-synthetic-data
\ No newline at end of file
+RUN pip install --extra-index-url https://git.sandbox.iuk.hdm-stuttgart.de/api/packages/grosse/pypi/simple jupyterlab-synthetic-data
+RUN pip install ipywebrtc opencv-python-headless jupyterlab-git