diff --git a/README.md b/README.md
index 5689eee..c6a7d38 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,7 @@ ___Warning:___ Before running these examples, you must install or update to the
 conda install astroquery
 conda install nodejs
 jupyter labextension install @jupyter-widgets/jupyterlab-manager
+jupyter labextension install @jupyterlab/plotly-extension
 ```
 before using the notebooks as many of them use this tool to download datasets for the examples.