diff --git a/plugins/yjs/fps_yjs/routes.py b/plugins/yjs/fps_yjs/routes.py
index 1ba97afb..56852885 100644
--- a/plugins/yjs/fps_yjs/routes.py
+++ b/plugins/yjs/fps_yjs/routes.py
@@ -181,6 +181,7 @@ async def serve(self, websocket: YWebsocket, permissions) -> None:
                 file_path = await self.contents.file_id_manager.get_path(file_id)
                 logger.info(f"Opening collaboration room: {websocket.path} ({file_path})")
                 document = YDOCS.get(file_type, YFILE)(room.ydoc)
+                document.file_id = file_id
                 self.documents[websocket.path] = document
                 async with self.lock:
                     model = await self.contents.read_content(file_path, True, file_format)
diff --git a/plugins/yjs/fps_yjs/ydocs/ybasedoc.py b/plugins/yjs/fps_yjs/ydocs/ybasedoc.py
index 8b68dad4..3d75d35e 100644
--- a/plugins/yjs/fps_yjs/ydocs/ybasedoc.py
+++ b/plugins/yjs/fps_yjs/ydocs/ybasedoc.py
@@ -51,6 +51,14 @@ def path(self) -> Optional[str]:
     def path(self, value: str) -> None:
         self._ystate["path"] = value
 
+    @property
+    def file_id(self) -> Optional[str]:
+        return self._ystate.get("file_id")
+
+    @file_id.setter
+    def file_id(self, value: str) -> None:
+        self._ystate["file_id"] = value
+
     @abstractmethod
     def get(self) -> Any:
         ...
diff --git a/plugins/yjs/fps_yjs/ydocs/ynotebook.py b/plugins/yjs/fps_yjs/ydocs/ynotebook.py
index 65cafabb..0cadd698 100644
--- a/plugins/yjs/fps_yjs/ydocs/ynotebook.py
+++ b/plugins/yjs/fps_yjs/ydocs/ynotebook.py
@@ -125,7 +125,7 @@ def set(self, value: Dict) -> None:
             # clear document
             self._ymeta.clear()
             self._ycells.clear()
-            for key in [k for k in self._ystate.keys() if k not in ("dirty", "path")]:
+            for key in [k for k in self._ystate.keys() if k not in ("dirty", "path", "file_id")]:
                 del self._ystate[key]
 
             # initialize document