diff --git a/wireup/ioc/dependency_container.py b/wireup/ioc/dependency_container.py
index d69c148..cb90e60 100644
--- a/wireup/ioc/dependency_container.py
+++ b/wireup/ioc/dependency_container.py
@@ -3,7 +3,7 @@
 import asyncio
 import functools
 import sys
-from typing import TYPE_CHECKING, Any, Callable, Tuple, TypeVar, overload
+from typing import TYPE_CHECKING, Any, Callable, Optional, Tuple, TypeVar, overload
 
 from .override_manager import OverrideManager
 
@@ -35,7 +35,7 @@
     from .parameter import ParameterBag
 
 __T = TypeVar("__T")
-__ObjectIdentifier = Tuple[type, Qualifier | None]
+__ObjectIdentifier = Tuple[type, Optional[Qualifier]]
 
 
 class DependencyContainer: