diff --git a/Dockerfile b/Dockerfile
index 7d3e944..707ecac 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,4 +7,4 @@ RUN pip install --extra-index-url https://git.sandbox.iuk.hdm-stuttgart.de/api/p
 #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
-RUN pip install ipywebrtc opencv-python-headless voila
+RUN pip install ipywebrtc opencv-python-headless voila==0.3.7