diff --git a/base/Dockerfile b/base/Dockerfile
index 630c1e36270058e31f41e47acce7bd32eb453fdd..c0c71814420300fd5ce9d594e97b5fd6c67e8668 100644
--- a/base/Dockerfile
+++ b/base/Dockerfile
@@ -56,9 +56,9 @@ RUN pip install --no-cache-dir -r /tmp/requirements.txt
 RUN jupyter labextension disable ipcluster \
                               ipyparallel-labextension
 
-# install additional labextensions
+# install additional labextensions (TODO: install with pip, if possible)
 RUN jupyter labextension install --no-build \
-                             clb-jupyter-ext-query-params@3.2.0 \
+                             clb-jupyter-ext-query-params-dev@3.2.0 \
                              clb-lab-extension@0.9.2 \
                              ipycanvas@0.12.0
 # ipycanvas@0.12.0: Python part installed via spack (py-ipycanvas@0.12.0)