diff --git a/_home_subpages/documentation.md b/_home_subpages/documentation.md
index 8f76f25..bddf0b0 100644
--- a/_home_subpages/documentation.md
+++ b/_home_subpages/documentation.md
@@ -32,6 +32,9 @@ conda install -y -c conda-forge ipywidgets beakerx
 
 ## Installation for Jupyter Lab
 
+**Important Note: BeakerX currently supports JupyterLab 1.x only.**
+(Installing the extension will break later versions of JupyterLab.)
+
 You can try it as follows.  Note that [installing Lab extensions
 requires
 npm](http://jupyterlab.readthedocs.io/en/stable/user/extensions.html).