diff --git a/code/container/README.md b/code/container/README.md
index b5d3b8bf19a35a6f0c08cf95e579974e01f0ad6d..f93d340f12a7abbd9cdf4b06f15c5f098695c14c 100644
--- a/code/container/README.md
+++ b/code/container/README.md
@@ -131,6 +131,11 @@ You can install RStudio with custom R packages or you chosse to install Julia. J
 
 ```
 %post
+
+   ...
+
+    conda install --quiet --yes 'jupyter-rsession-proxy=2.2.1'
+
     # Install RStudio
     apt install -y --no-install-recommends software-properties-common dirmngr
     wget -qO- https://cloud.r-project.org/bin/linux/ubuntu/marutter_pubkey.asc | tee -a /etc/apt/trusted.gpg.d/cran_ubuntu_key.asc