diff --git a/projects/jupyter-collaboration/pyproject.toml b/projects/jupyter-collaboration/pyproject.toml
index b6d3a46a..1629e518 100644
--- a/projects/jupyter-collaboration/pyproject.toml
+++ b/projects/jupyter-collaboration/pyproject.toml
@@ -30,6 +30,7 @@ classifiers = [
 ]
 dynamic = ["version"]
 dependencies = [
+    "jupyterlab>=4.3.0,<4.4.0",
     "jupyter_collaboration_ui>=1.1.0",
     "jupyter_docprovider>=1.1.0",
     "jupyter_server_ydoc>=1.1.0",