diff --git a/minimal/Dockerfile.2021-ss.1 b/minimal/Dockerfile.2021-ss.1
index 1b5e6920e70406f881c389a9189fceca6380abea..da12503dd1ef7117afdb299fa48f08f5ef880ca0 100644
--- a/minimal/Dockerfile.2021-ss.1
+++ b/minimal/Dockerfile.2021-ss.1
@@ -34,9 +34,10 @@ RUN jupyter labextension install \
 	@jupyterlab/hub-extension \
 	@jupyterlab/toc-extension \
 	@jupyter-widgets/jupyterlab-manager \
+	@jupyterlab/git \
 	jupyter-matplotlib \
 	git+https://github.com/youngthejames/jupyterlab_filetree \
-	jupyterlab_iframe 
+	jupyterlab_iframe
 #	jupyterlab-rwth \
 #	@jupyterlab/latex