diff --git a/src/mongo/mongo.py b/src/mongo/mongo.py
index 294fb3c..dbeec7e 100644
--- a/src/mongo/mongo.py
+++ b/src/mongo/mongo.py
@@ -27,7 +27,7 @@ import logging
 from typing import Any, List, Optional
 
 from pymongo import ReturnDocument
-from motor.motor_asyncio import AsyncIOMotorClient, AsyncIOMotorCollection
+from motor.motor_asyncio import AsyncIOMotorClient, AsyncIOMotorCollection, AsyncIOMotorDatabase
 
 log = logging.getLogger(__name__)
 
@@ -48,7 +48,7 @@ class Mongo:
         return self._db[name]
 
     @property
-    def database(self):
+    def database(self) -> AsyncIOMotorDatabase:
         """raw motor database handle"""
         return self._db