diff --git a/Makefile b/Makefile
index 7d664107..dfdca2f1 100644
--- a/Makefile
+++ b/Makefile
@@ -70,7 +70,7 @@ clean:
 lint:
 	isort --check-only $(code_dir)
 	black --check --diff $(code_dir)
-	ruff $(code_dir)
+	ruff $(package_dir)
 	mypy $(package_dir)
 
 .PHONY: reformat
diff --git a/aiogram/dispatcher/dispatcher.py b/aiogram/dispatcher/dispatcher.py
index 7a83199f..2c1a8cf5 100644
--- a/aiogram/dispatcher/dispatcher.py
+++ b/aiogram/dispatcher/dispatcher.py
@@ -107,13 +107,13 @@ class Dispatcher(Router):
         return self.fsm.storage
 
     @property
-    def parent_router(self) -> None:
+    def parent_router(self) -> Optional[Router]:
         """
         Dispatcher has no parent router and can't be included to any other routers or dispatchers
 
         :return:
         """
-        pass
+        return None  # noqa: RET501
 
     @parent_router.setter
     def parent_router(self, value: Router) -> None:
diff --git a/aiogram/dispatcher/flags.py b/aiogram/dispatcher/flags.py
index d7d82874..82cdbc04 100644
--- a/aiogram/dispatcher/flags.py
+++ b/aiogram/dispatcher/flags.py
@@ -94,7 +94,7 @@ def extract_flags(handler: Union["HandlerObject", Dict[str, Any]]) -> Dict[str,
         handler = handler["handler"]
     if not hasattr(handler, "flags"):
         return {}
-    return handler.flags  # type: ignore
+    return handler.flags
 
 
 def get_flag(
diff --git a/aiogram/methods/base.py b/aiogram/methods/base.py
index 72c68ebb..066fd434 100644
--- a/aiogram/methods/base.py
+++ b/aiogram/methods/base.py
@@ -2,7 +2,16 @@ from __future__ import annotations
 
 import abc
 import secrets
-from typing import TYPE_CHECKING, Any, Dict, Generator, Generic, Optional, TypeVar
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    Dict,
+    Generator,
+    Generic,
+    Optional,
+    TypeVar,
+    Union,
+)
 
 from pydantic import BaseConfig, BaseModel, Extra, root_validator
 from pydantic.generics import GenericModel
diff --git a/examples/multibot.py b/examples/multibot.py
index 8f086469..b6a324cd 100644
--- a/examples/multibot.py
+++ b/examples/multibot.py
@@ -2,6 +2,7 @@ from os import getenv
 from typing import Any, Dict, Union
 
 from aiohttp import web
+from finite_state_machine import form_router
 
 from aiogram import Bot, Dispatcher, F, Router
 from aiogram.client.session.aiohttp import AiohttpSession
@@ -15,7 +16,6 @@ from aiogram.webhook.aiohttp_server import (
     TokenBasedRequestHandler,
     setup_application,
 )
-from finite_state_machine import form_router
 
 main_router = Router()
 
diff --git a/examples/web_app/main.py b/examples/web_app/main.py
index abbd8e6d..0d58042c 100644
--- a/examples/web_app/main.py
+++ b/examples/web_app/main.py
@@ -3,12 +3,12 @@ from os import getenv
 
 from aiohttp.web import run_app
 from aiohttp.web_app import Application
+from handlers import my_router
+from routes import check_data_handler, demo_handler, send_message_handler
 
 from aiogram import Bot, Dispatcher
 from aiogram.types import MenuButtonWebApp, WebAppInfo
 from aiogram.webhook.aiohttp_server import SimpleRequestHandler, setup_application
-from handlers import my_router
-from routes import check_data_handler, demo_handler, send_message_handler
 
 TELEGRAM_TOKEN = getenv("TELEGRAM_TOKEN")
 APP_BASE_URL = getenv("APP_BASE_URL")
diff --git a/pyproject.toml b/pyproject.toml
index 48acb1f7..68fe8530 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -185,7 +185,9 @@ select = [
     "T20",
     "Q",
     "RET",
-    "I"
+]
+ignore = [
+    "F401"
 ]
 src = ["aiogram", "tests"]
 exclude = [
@@ -240,27 +242,38 @@ exclude_lines = [
 ]
 
 [tool.mypy]
-strict = true
+plugins = "pydantic.mypy"
+python_version = "3.8"
+show_error_codes = true
+show_error_context = true
+pretty = true
+ignore_missing_imports = false
+warn_unused_configs = true
+disallow_subclassing_any = true
+disallow_any_generics = true
+disallow_untyped_calls = true
+disallow_untyped_defs = true
+disallow_incomplete_defs = true
+check_untyped_defs = true
+disallow_untyped_decorators = true
+no_implicit_optional = true
+warn_redundant_casts = true
+warn_unused_ignores = true
+warn_return_any = true
+follow_imports_for_stubs = true
+namespace_packages = true
+show_absolute_path = true
 
 [[tool.mypy.overrides]]
-module = "mypy-aiofiles"
-ignore_missing_imports = true
-
-[[tool.mypy.overrides]]
-module = "mypy-async_lru"
-ignore_missing_imports = true
-
-[[tool.mypy.overrides]]
-module = "mypy-uvloop"
-ignore_missing_imports = true
-
-[[tool.mypy.overrides]]
-module = "mypy-redis.*"
-ignore_missing_imports = true
-
-[[tool.mypy.overrides]]
-module = "mypy-babel.*"
+module = [
+    "aiofiles",
+    "async_lru",
+    "uvloop",
+    "redis.*",
+    "babel.*",
+]
 ignore_missing_imports = true
+disallow_untyped_defs = true
 
 [tool.black]
 line-length = 99