diff --git a/images/handbook-authoring-image/postBuild b/images/handbook-authoring-image/postBuild
index 51ba0f7..da3e782 100644
--- a/images/handbook-authoring-image/postBuild
+++ b/images/handbook-authoring-image/postBuild
@@ -1,9 +1,6 @@
 npm install -g mystmd
 
-jupyter labextension install jupyterlab_iframe@^0.2
-jupyter serverextension enable --py jupyterlab_iframe
-
 #config="c.JupyterLabIFrame.welcome = 'local://binder/landing.html'"
-config=""
+config="c.ContentsManager.allow_hidden = True"
 mkdir -p ~/.jupyter
 echo $config > ~/.jupyter/jupyter_notebook_config.py
diff --git a/images/handbook-authoring-image/requirements.txt b/images/handbook-authoring-image/requirements.txt
index fa704d0..0e17877 100644
--- a/images/handbook-authoring-image/requirements.txt
+++ b/images/handbook-authoring-image/requirements.txt
@@ -1,6 +1,5 @@
 docutils==0.17.1  # see https://jupyterbook.org/en/stable/content/citations.html?highlight=docutils#citations-and-bibliographies
 jupyter-book
-jupyterhub>=4.1.5
 jupyterlab
 jupyterlab-iframe
 jupyterlab-git 
@@ -13,6 +12,5 @@ matplotlib
 nbgitpuller>=1.2.1
 numpy
 nox
-sphinxcontrib-mermaid
 sphinxext-rediraffe
 sphinx-intl