diff --git a/aioinject/markers.py b/aioinject/markers.py
index b95f4f7..1467df0 100644
--- a/aioinject/markers.py
+++ b/aioinject/markers.py
@@ -15,6 +15,5 @@ class Inject:
 else:
 
     class Injected(Generic[T]):
-        @classmethod
         def __class_getitem__(cls, item):  # noqa: ANN206, ANN001
             return Annotated[item, Inject]