diff --git a/src/pycrdt/websocket/asgi_server.py b/src/pycrdt/websocket/asgi_server.py
index be6540f..a69efc5 100644
--- a/src/pycrdt/websocket/asgi_server.py
+++ b/src/pycrdt/websocket/asgi_server.py
@@ -3,6 +3,7 @@
 from collections.abc import Awaitable
 from inspect import isawaitable
 from typing import Any, Callable
+from urllib.parse import parse_qs
 
 from .websocket_server import WebsocketServer
 
@@ -14,11 +15,13 @@ def __init__(
         send: Callable[[dict[str, Any]], Awaitable[None]],
         path: str,
         on_disconnect: Callable[[dict[str, Any]], Awaitable[None] | None] | None = None,
+        query_params: dict[str, list[str]] | None = None,
     ):
         self._receive = receive
         self._send = send
         self._path = path
         self._on_disconnect = on_disconnect
+        self.query_params = {} if query_params is None else query_params
 
     @property
     def path(self) -> str:
@@ -98,5 +101,8 @@ async def __call__(
                         return
 
                 await send({"type": "websocket.accept"})
-                websocket = ASGIWebsocket(receive, send, scope["path"], self._on_disconnect)
+                query_params = parse_qs(scope["query_string"])
+                websocket = ASGIWebsocket(
+                    receive, send, scope["path"], self._on_disconnect, query_params=query_params
+                )
                 await self._websocket_server.serve(websocket)