diff --git a/maxapi/dispatcher.py b/maxapi/dispatcher.py
index 20dd24d..4871e80 100644
--- a/maxapi/dispatcher.py
+++ b/maxapi/dispatcher.py
@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import asyncio
 
-from typing import Any, Callable, Dict, List
+from typing import Any, Callable, Dict, List, TYPE_CHECKING
 
 from fastapi import FastAPI, Request
 from fastapi.responses import JSONResponse