diff --git a/docs/using/recipes.md b/docs/using/recipes.md
index 706d4a26..48963f85 100644
--- a/docs/using/recipes.md
+++ b/docs/using/recipes.md
@@ -259,15 +259,12 @@ version in the Hub itself.
 ```dockerfile
 FROM jupyter/base-notebook
 
-RUN pip install --no-cache-dir 'jupyterhub==1.4.1' && \
+RUN mamba install --yes 'jupyterhub==4.0.1' && \
+    mamba clean --all -f -y && \
     fix-permissions "${CONDA_DIR}" && \
     fix-permissions "/home/${NB_USER}"
 ```
 
-Credit: [MinRK](https://github.com/jupyter/docker-stacks/issues/423#issuecomment-322767742)
-
-Ref: <https://github.com/jupyter/docker-stacks/issues/177>
-
 ## Spark
 
 A few suggestions have been made regarding using Docker Stacks with spark.