diff --git a/jupyter_collaboration/rooms.py b/jupyter_collaboration/rooms.py
index 86b4eb6d..d1e2a6bc 100644
--- a/jupyter_collaboration/rooms.py
+++ b/jupyter_collaboration/rooms.py
@@ -100,6 +100,7 @@ async def initialize(self) -> None:
             # try to apply Y updates from the YStore for this document
             read_from_source = True
             if self.ystore is not None:
+                await self.ystore.started.wait()
                 try:
                     await self.ystore.apply_updates(self.ydoc)
                     self._emit(
diff --git a/pyproject.toml b/pyproject.toml
index 5bb2aeaf..9e9c6cad 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ classifiers = [
 dependencies = [
     "jupyter_server>=2.0.0,<3.0.0",
     "jupyter_ydoc>=2.0.0,<3.0.0",
-    "pycrdt-websocket>=0.13.1,<0.14.0",
+    "pycrdt-websocket>=0.13.2,<0.14.0",
     "jupyter_events>=0.10.0",
     "jupyter_server_fileid>=0.7.0,<1",
     "jsonschema>=4.18.0"