diff --git a/projects/jupyter-server-ydoc/jupyter_server_ydoc/handlers.py b/projects/jupyter-server-ydoc/jupyter_server_ydoc/handlers.py
index 59849058..d74bd6df 100644
--- a/projects/jupyter-server-ydoc/jupyter_server_ydoc/handlers.py
+++ b/projects/jupyter-server-ydoc/jupyter_server_ydoc/handlers.py
@@ -341,7 +341,7 @@ async def _clean_room(self) -> None:
         async with self._room_lock(self._room_id):
             # Remove the room from the websocket server
             self.log.info("Deleting Y document from memory: %s", self._room_id)
-            self._websocket_server.delete_room(room=self.room)
+            await self._websocket_server.delete_room(room=self.room)
 
             # Clean room
             del self.room
diff --git a/projects/jupyter-server-ydoc/jupyter_server_ydoc/rooms.py b/projects/jupyter-server-ydoc/jupyter_server_ydoc/rooms.py
index e88e6d39..691943c5 100644
--- a/projects/jupyter-server-ydoc/jupyter_server_ydoc/rooms.py
+++ b/projects/jupyter-server-ydoc/jupyter_server_ydoc/rooms.py
@@ -155,13 +155,13 @@ def _emit(self, level: LogLevel, action: str | None = None, msg: str | None = No
 
         self._logger.emit(schema_id=JUPYTER_COLLABORATION_EVENTS_URI, data=data)
 
-    def stop(self) -> None:
+    async def stop(self) -> None:
         """
         Stop the room.
 
         Cancels the save task and unsubscribes from the file.
         """
-        super().stop()
+        await super().stop()
         # TODO: Should we cancel or wait ?
         if self._saving_document:
             self._saving_document.cancel()
diff --git a/projects/jupyter-server-ydoc/jupyter_server_ydoc/websocketserver.py b/projects/jupyter-server-ydoc/jupyter_server_ydoc/websocketserver.py
index 00d3f54e..365da078 100644
--- a/projects/jupyter-server-ydoc/jupyter_server_ydoc/websocketserver.py
+++ b/projects/jupyter-server-ydoc/jupyter_server_ydoc/websocketserver.py
@@ -58,7 +58,7 @@ async def clean(self):
         #         self.log.warning(msg)
         #         self.log.debug("Pending tasks: %r", pending)
 
-        self.stop()
+        await self.stop()
         tasks = []
         if self.monitor_task is not None:
             self.monitor_task.cancel()
diff --git a/projects/jupyter-server-ydoc/pyproject.toml b/projects/jupyter-server-ydoc/pyproject.toml
index 30859d6a..9ab08633 100644
--- a/projects/jupyter-server-ydoc/pyproject.toml
+++ b/projects/jupyter-server-ydoc/pyproject.toml
@@ -30,7 +30,7 @@ authors = [
 dependencies = [
     "jupyter_server>=2.4.0,<3.0.0",
     "jupyter_ydoc>=2.0.0,<3.0.0",
-    "pycrdt-websocket>=0.12.5,<0.13.0",
+    "pycrdt-websocket>=0.13.0,<0.14.0",
     "jupyter_events>=0.10.0",
     "jupyter_server_fileid>=0.7.0,<1",
     "jsonschema>=4.18.0"