diff --git a/examples/ipytree.ipynb b/examples/ipytree.ipynb
index d144571..a08bce8 100644
--- a/examples/ipytree.ipynb
+++ b/examples/ipytree.ipynb
@@ -8,6 +8,8 @@
     "\n",
     "In this example, we demonstrate how to create an alternative file browser UI using the `ipytree` widget.\n",
     "\n",
+    "**BROKEN until ipytree is updated to work with JupyterLab 4**\n",
+    "\n",
     "## Collecting the files\n",
     "\n",
     "First let's define some imports."