diff --git a/aiogram/dispatcher/filters/base.py b/aiogram/dispatcher/filters/base.py
index cab3c4ec..ce7b007c 100644
--- a/aiogram/dispatcher/filters/base.py
+++ b/aiogram/dispatcher/filters/base.py
@@ -1,5 +1,5 @@
 from abc import ABC, abstractmethod
-from typing import TYPE_CHECKING, Any, Awaitable, Callable, Dict, Union
+from typing import TYPE_CHECKING, Any, Dict, Union
 
 from pydantic import BaseModel
 
@@ -14,9 +14,7 @@ class BaseFilter(ABC, BaseModel):
     else:  # pragma: no cover
 
         @abstractmethod
-        async def __call__(
-            self, *args: Any, **kwargs: Any
-        ) -> Union[bool, Dict[str, Any]]:
+        async def __call__(self, *args: Any, **kwargs: Any) -> Union[bool, Dict[str, Any]]:
             pass
 
     def __await__(self):
diff --git a/tests/test_dispatcher/test_event/test_observer.py b/tests/test_dispatcher/test_event/test_observer.py
index 0b21b62e..008c0ceb 100644
--- a/tests/test_dispatcher/test_event/test_observer.py
+++ b/tests/test_dispatcher/test_event/test_observer.py
@@ -2,6 +2,7 @@ import functools
 from typing import Any, Awaitable, Callable, Dict, NoReturn, Union
 
 import pytest
+
 from aiogram.dispatcher.event.handler import HandlerObject
 from aiogram.dispatcher.event.observer import EventObserver, SkipHandler, TelegramEventObserver
 from aiogram.dispatcher.filters.base import BaseFilter