diff --git a/tg/tasks.py b/tg/tasks.py
index e4acbf3..304c316 100644
--- a/tg/tasks.py
+++ b/tg/tasks.py
@@ -3,7 +3,7 @@ import traceback
 
 from asyncio import sleep
 from aiogram import Bot
-from aiogram.exceptions import TelegramBadRequest
+from aiogram.exceptions import TelegramBadRequest, TelegramMigrateToChat
 from aiogram.types import ChatMemberBanned, ChatMemberLeft
 from aiogram.utils.formatting import Bold
 
@@ -11,6 +11,53 @@ import tg.tg_database as database
 from tg.handlers.user import format_rating
 
 
+async def is_user_in_chat(bot: Bot, chat_id: int, user_id: int) -> bool:
+    found = True
+    try:
+        info = await bot.get_chat_member(chat_id, user_id)
+        if isinstance(info, ChatMemberLeft) or isinstance(info, ChatMemberBanned):
+            found = False
+    except TelegramBadRequest:
+        found = False
+    except Exception:
+        pass
+    return found
+
+
+async def cleanup_chats(bot: Bot):
+    me = await bot.get_me()
+
+    # Обработка миграций чатов
+    for chat in database.DB.get_chats():
+        chat_id = chat['id']
+        if chat_id > 0:
+            continue
+
+        try:
+            await bot.get_chat(chat_id)
+        except TelegramMigrateToChat as e:
+            new_id = e.migrate_to_chat_id
+            new_chat = database.DB.get_chat(new_id)
+
+            if new_chat is None or new_chat['active'] == 0:
+                database.DB.chat_delete(new_id)
+                database.DB.chat_update(chat_id, id=new_id)
+            else:
+                database.DB.chat_delete(chat_id)
+        except Exception:
+            continue
+
+    # Удаление чатов, в которых больше нет бота
+    for chat in database.DB.get_chats():
+        chat_id = chat['id']
+        if chat_id > 0:
+            # TODO
+            continue
+
+        if not is_user_in_chat(bot, chat_id, me.id):
+            database.DB.chat_delete(chat_id)
+
+
 async def cleanup_users(bot: Bot):
     for chat in database.DB.get_chats():
         if chat['active'] == 0:
@@ -20,15 +67,7 @@ async def cleanup_users(bot: Bot):
 
         for user in database.DB.get_top_silent(chat_id=chat_id, threshold_days=14):
             user_id = user['user_id']
-            found = False
-            try:
-                info = await bot.get_chat_member(chat_id, user_id)
-                if not isinstance(info, ChatMemberLeft) and not isinstance(info, ChatMemberBanned):
-                    found = True
-            except TelegramBadRequest:
-                pass
-
-            if not found:
+            if not is_user_in_chat(bot, chat_id, user_id):
                 database.DB.delete_user(chat_id, user_id)
                 print(f'Из чата (id={chat_id}) удален пользователь (id={user_id})')
 
@@ -77,8 +116,17 @@ async def daily_maintenance_task(bot: Bot):
     while True:
         await wait_until(target_datetime)
 
+        try:
+            await cleanup_chats(bot)
+        except Exception:
+            print(traceback.format_exc())
+
         try:
             await cleanup_users(bot)
+        except Exception:
+            print(traceback.format_exc())
+
+        try:
             await reset_counters(target_datetime.day == 1, bot)
         except Exception:
             print(traceback.format_exc())