diff --git a/django-stubs/conf/__init__.pyi b/django-stubs/conf/__init__.pyi
index 742f729..83ec327 100644
--- a/django-stubs/conf/__init__.pyi
+++ b/django-stubs/conf/__init__.pyi
@@ -14,6 +14,7 @@ class _DjangoConfLazyObject(LazyObject):
     def __getattr__(self, item: Any) -> Any: ...
 
 class LazySettings(_DjangoConfLazyObject):
+    SETTINGS_MODULE: str
     @property
     def configured(self) -> bool: ...
     def configure(self, default_settings: Any = ..., **options: Any) -> None: ...
@@ -21,11 +22,12 @@ class LazySettings(_DjangoConfLazyObject):
 settings: LazySettings = ...
 
 class Settings:
+    SETTINGS_MODULE: str
     def __init__(self, settings_module: str) -> None: ...
     def is_overridden(self, setting: str) -> bool: ...
 
 class UserSettingsHolder:
-    SETTINGS_MODULE: Optional[Any] = ...
+    SETTINGS_MODULE: None = ...
     def __init__(self, default_settings: Any) -> None: ...
     def __getattr__(self, name: str) -> Any: ...
     def __setattr__(self, name: str, value: Any) -> None: ...