diff --git a/bot.py b/bot.py
index 7a708d80..a995ed69 100644
--- a/bot.py
+++ b/bot.py
@@ -7,14 +7,14 @@ from aiogram.fsm.storage.memory import MemoryStorage
 from aiogram.types import ErrorEvent
 
 from config import API_TOKEN
+from filters.private import IsPrivate
 from logger import logger
 from middlewares.admin import AdminMiddleware
 from middlewares.database import DatabaseMiddleware
 from middlewares.delete import DeleteMessageMiddleware
 from middlewares.logging import LoggingMiddleware
-from middlewares.user import UserMiddleware
 from middlewares.throttling import ThrottlingMiddleware
-from filters.private import IsPrivate
+from middlewares.user import UserMiddleware
 
 bot = Bot(token=API_TOKEN, default=DefaultBotProperties(parse_mode=ParseMode.HTML))
 storage = MemoryStorage()
diff --git a/filters/private.py b/filters/private.py
index 988db95c..334da487 100644
--- a/filters/private.py
+++ b/filters/private.py
@@ -5,4 +5,4 @@ from aiogram.types import Chat, TelegramObject
 
 class IsPrivate(BaseFilter):
     async def __call__(self, event: TelegramObject, event_chat: Chat) -> bool:
-        return event_chat.type == ChatType.PRIVATE
\ No newline at end of file
+        return event_chat.type == ChatType.PRIVATE
diff --git a/handlers/admin/admin_coupons.py b/handlers/admin/admin_coupons.py
index f060acb7..9af0c575 100644
--- a/handlers/admin/admin_coupons.py
+++ b/handlers/admin/admin_coupons.py
@@ -72,7 +72,7 @@ async def show_coupon_list(callback_query: types.CallbackQuery, session: Any):
             builder.row(InlineKeyboardButton(text="⬅️ Предыдущая", callback_data=f"coupons:{current_page-1}"))
         if current_page < total_pages:
             builder.row(InlineKeyboardButton(text="➡️ Следующая", callback_data=f"coupons:{current_page+1}"))
-        
+
         builder.row(InlineKeyboardButton(text="🔙 Назад", callback_data="coupons_editor"))
         await callback_query.message.answer(coupon_list, reply_markup=builder.as_markup())
 
diff --git a/handlers/keys/keys.py b/handlers/keys/keys.py
index 65f3ba6d..8a9cbbb7 100644
--- a/handlers/keys/keys.py
+++ b/handlers/keys/keys.py
@@ -106,7 +106,7 @@ def build_keys_response(records):
             expiry_date = datetime.utcfromtimestamp(record["expiry_time"] / 1000).strftime("%d.%m.%Y")
             builder.row(
                 InlineKeyboardButton(
-                    text=f"🔑 {key_name} (до {expiry_date})", 
+                    text=f"🔑 {key_name} (до {expiry_date})",
                     callback_data=f"view_key|{key_name}"
                 )
             )
diff --git a/handlers/notifications.py b/handlers/notifications.py
index d5862e9d..cc3cc46c 100644
--- a/handlers/notifications.py
+++ b/handlers/notifications.py
@@ -1,8 +1,8 @@
 import asyncio
 from datetime import datetime, timedelta
-import pytz
 
 import asyncpg
+import pytz
 from aiogram import Bot, Router, types
 from aiogram.exceptions import TelegramForbiddenError
 from aiogram.utils.keyboard import InlineKeyboardBuilder
@@ -15,10 +15,10 @@ from config import (
     AUTO_RENEW_KEYS,
     DATABASE_URL,
     DEV_MODE,
+    EXPIRED_KEYS_CHECK_INTERVAL,
     RENEWAL_PLANS,
     TOTAL_GB,
     TRIAL_TIME,
-    EXPIRED_KEYS_CHECK_INTERVAL
 )
 from database import (
     add_blocked_user,
diff --git a/middlewares/throttling.py b/middlewares/throttling.py
index af753651..8fd18052 100644
--- a/middlewares/throttling.py
+++ b/middlewares/throttling.py
@@ -1,4 +1,5 @@
-from typing import Any, Awaitable, Callable, MutableMapping
+from collections.abc import Awaitable, Callable, MutableMapping
+from typing import Any
 
 from aiogram import BaseMiddleware
 from aiogram.dispatcher.flags import get_flag
@@ -7,6 +8,7 @@ from cachetools import TTLCache
 
 from logger import logger
 
+
 class ThrottlingMiddleware(BaseMiddleware):
     def __init__(
         self,
@@ -61,4 +63,4 @@ class ThrottlingMiddleware(BaseMiddleware):
                     f"No throttling key provided for user {user.id}, proceeding without throttle."
                 )
 
-        return await handler(event, data)
\ No newline at end of file
+        return await handler(event, data)
diff --git a/requirements.txt b/requirements.txt
index e5e3393f..2d8df8b2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,4 +33,5 @@ robokassa
 ping3
 ruff
 pytz
-cachetools
\ No newline at end of file
+cachetools
+babel
\ No newline at end of file