diff --git a/README.md b/README.md
index 639a6ff9..9f977023 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,7 @@
 [![PyPi status](https://img.shields.io/pypi/status/aiogram.svg?style=flat-square)](https://pypi.python.org/pypi/aiogram)
 [![Downloads](https://img.shields.io/pypi/dm/aiogram.svg?style=flat-square)](https://pypi.python.org/pypi/aiogram)
 [![Supported python versions](https://img.shields.io/pypi/pyversions/aiogram.svg?style=flat-square)](https://pypi.python.org/pypi/aiogram)
+[![Telegram Bot API](https://img.shields.io/badge/Telegram%20Bot%20API-4.3-blue.svg?style=flat-square&logo=telegram)](https://core.telegram.org/bots/api)
 [![Documentation Status](https://img.shields.io/readthedocs/pip/stable.svg?style=flat-square)](http://aiogram.readthedocs.io/en/latest/?badge=latest)
 [![Github issues](https://img.shields.io/github/issues/aiogram/aiogram.svg?style=flat-square)](https://github.com/aiogram/aiogram/issues)
 [![MIT License](https://img.shields.io/pypi/l/aiogram.svg?style=flat-square)](https://opensource.org/licenses/MIT)
diff --git a/README.rst b/README.rst
index fde5bc7f..0377aad9 100644
--- a/README.rst
+++ b/README.rst
@@ -21,6 +21,10 @@ AIOGramBot
    :target: https://pypi.python.org/pypi/aiogram
    :alt: Supported python versions
 
+.. image:: https://img.shields.io/badge/Telegram%20Bot%20API-4.3-blue.svg?style=flat-square&logo=telegram
+   :target: https://core.telegram.org/bots/api
+   :alt: Telegram Bot API
+
 .. image:: https://img.shields.io/readthedocs/pip/stable.svg?style=flat-square
    :target: http://aiogram.readthedocs.io/en/latest/?badge=latest
    :alt: Documentation Status
diff --git a/aiogram/__init__.py b/aiogram/__init__.py
index b5e647c9..6fe7d1c6 100644
--- a/aiogram/__init__.py
+++ b/aiogram/__init__.py
@@ -38,5 +38,5 @@ __all__ = [
     'utils'
 ]
 
-__version__ = '2.1.1.dev1'
-__api_version__ = '4.2'
+__version__ = '2.2.dev1'
+__api_version__ = '4.3'
diff --git a/aiogram/bot/api.py b/aiogram/bot/api.py
index 60dbc36a..6c51b295 100644
--- a/aiogram/bot/api.py
+++ b/aiogram/bot/api.py
@@ -147,7 +147,7 @@ class Methods(Helper):
     """
     Helper for Telegram API Methods listed on https://core.telegram.org/bots/api
 
-    List is updated to Bot API 4.2
+    List is updated to Bot API 4.3
     """
     mode = HelperMode.lowerCamelCase
 
diff --git a/aiogram/types/__init__.py b/aiogram/types/__init__.py
index e509ee74..5395e486 100644
--- a/aiogram/types/__init__.py
+++ b/aiogram/types/__init__.py
@@ -33,6 +33,7 @@ from .input_message_content import InputContactMessageContent, InputLocationMess
 from .invoice import Invoice
 from .labeled_price import LabeledPrice
 from .location import Location
+from .login_url import LoginUrl
 from .mask_position import MaskPosition
 from .message import ContentType, ContentTypes, Message, ParseMode
 from .message_entity import MessageEntity, MessageEntityType
@@ -126,6 +127,7 @@ __all__ = (
     'KeyboardButton',
     'LabeledPrice',
     'Location',
+    'LoginUrl',
     'MaskPosition',
     'MediaGroup',
     'Message',
diff --git a/aiogram/types/inline_keyboard.py b/aiogram/types/inline_keyboard.py
index 69049345..97ad35da 100644
--- a/aiogram/types/inline_keyboard.py
+++ b/aiogram/types/inline_keyboard.py
@@ -3,6 +3,7 @@ import typing
 from . import base
 from . import fields
 from .callback_game import CallbackGame
+from .login_url import LoginUrl
 
 
 class InlineKeyboardMarkup(base.TelegramObject):
@@ -16,10 +17,16 @@ class InlineKeyboardMarkup(base.TelegramObject):
     """
     inline_keyboard: 'typing.List[typing.List[InlineKeyboardButton]]' = fields.ListOfLists(base='InlineKeyboardButton')
 
-    def __init__(self, row_width=3, inline_keyboard=None):
+    def __init__(self, row_width=3, inline_keyboard=None, **kwargs):
         if inline_keyboard is None:
             inline_keyboard = []
-        super(InlineKeyboardMarkup, self).__init__(conf={'row_width': row_width}, inline_keyboard=inline_keyboard)
+
+        conf = kwargs.pop('conf', {}) or {}
+        conf['row_width'] = row_width
+
+        super(InlineKeyboardMarkup, self).__init__(**kwargs,
+                                                   conf=conf,
+                                                   inline_keyboard=inline_keyboard)
 
     @property
     def row_width(self):
@@ -84,16 +91,26 @@ class InlineKeyboardButton(base.TelegramObject):
     """
     text: base.String = fields.Field()
     url: base.String = fields.Field()
+    login_url: LoginUrl = fields.Field(base=LoginUrl)
     callback_data: base.String = fields.Field()
     switch_inline_query: base.String = fields.Field()
     switch_inline_query_current_chat: base.String = fields.Field()
     callback_game: CallbackGame = fields.Field(base=CallbackGame)
     pay: base.Boolean = fields.Field()
 
-    def __init__(self, text: base.String, url: base.String = None, callback_data: base.String = None,
-                 switch_inline_query: base.String = None, switch_inline_query_current_chat: base.String = None,
-                 callback_game: CallbackGame = None, pay: base.Boolean = None):
-        super(InlineKeyboardButton, self).__init__(text=text, url=url, callback_data=callback_data,
+    def __init__(self, text: base.String,
+                 url: base.String = None,
+                 login_url: LoginUrl = None,
+                 callback_data: base.String = None,
+                 switch_inline_query: base.String = None,
+                 switch_inline_query_current_chat: base.String = None,
+                 callback_game: CallbackGame = None,
+                 pay: base.Boolean = None, **kwargs):
+        super(InlineKeyboardButton, self).__init__(text=text,
+                                                   url=url,
+                                                   login_url=login_url,
+                                                   callback_data=callback_data,
                                                    switch_inline_query=switch_inline_query,
                                                    switch_inline_query_current_chat=switch_inline_query_current_chat,
-                                                   callback_game=callback_game, pay=pay)
+                                                   callback_game=callback_game,
+                                                   pay=pay, **kwargs)
diff --git a/aiogram/types/login_url.py b/aiogram/types/login_url.py
new file mode 100644
index 00000000..c0dd6133
--- /dev/null
+++ b/aiogram/types/login_url.py
@@ -0,0 +1,30 @@
+from . import base
+from . import fields
+
+
+class LoginUrl(base.TelegramObject):
+    """
+    This object represents a parameter of the inline keyboard button used to automatically authorize a user.
+    Serves as a great replacement for the Telegram Login Widget when the user is coming from Telegram.
+    All the user needs to do is tap/click a button and confirm that they want to log in.
+
+    https://core.telegram.org/bots/api#loginurl
+    """
+    url: base.String = fields.Field()
+    forward_text: base.String = fields.Field()
+    bot_username: base.String = fields.Field()
+    request_write_access: base.Boolean = fields.Field()
+
+    def __init__(self,
+                 url: base.String,
+                 forward_text: base.String = None,
+                 bot_username: base.String = None,
+                 request_write_access: base.Boolean = None,
+                 **kwargs):
+        super(LoginUrl, self).__init__(
+            url=url,
+            forward_text=forward_text,
+            bot_username=bot_username,
+            request_write_access=request_write_access,
+            **kwargs
+        )
diff --git a/aiogram/types/message.py b/aiogram/types/message.py
index cc392749..2c1f31c8 100644
--- a/aiogram/types/message.py
+++ b/aiogram/types/message.py
@@ -14,7 +14,7 @@ from .contact import Contact
 from .document import Document
 from .force_reply import ForceReply
 from .game import Game
-from .inline_keyboard import InlineKeyboardMarkup
+from .inline_keyboard import InlineKeyboardMarkup, InlineKeyboardButton
 from .input_media import MediaGroup, InputMedia
 from .invoice import Invoice
 from .location import Location
@@ -87,6 +87,7 @@ class Message(base.TelegramObject):
     connected_website: base.String = fields.Field()
     passport_data: PassportData = fields.Field(base=PassportData)
     poll: Poll = fields.Field(base=Poll)
+    reply_markup: typing.List[typing.List[InlineKeyboardButton]] = fields.ListOfLists(base=InlineKeyboardButton)
 
     @property
     @functools.lru_cache()
diff --git a/aiogram/utils/exceptions.py b/aiogram/utils/exceptions.py
index b817e4cc..45277206 100644
--- a/aiogram/utils/exceptions.py
+++ b/aiogram/utils/exceptions.py
@@ -451,6 +451,11 @@ class ResultIdDuplicate(BadRequest):
     text = 'Result ID duplicate'
 
 
+class BotDomainInvalid(BadRequest):
+    match = 'bot_domain_invalid'
+    text = 'Invalid bot domain'
+
+
 class NotFound(TelegramAPIError, _MatchErrorMixin):
     __group = True
 
diff --git a/docs/source/index.rst b/docs/source/index.rst
index d9ad1ca4..89cdbf79 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -2,6 +2,10 @@ Welcome to aiogram's documentation!
 ===================================
 
 
+    .. image:: https://img.shields.io/badge/telegram-aiogram-blue.svg?style=flat-square
+       :target: https://t.me/aiogram_live
+       :alt: [Telegram] aiogram live
+
     .. image:: https://img.shields.io/pypi/v/aiogram.svg?style=flat-square
        :target: https://pypi.python.org/pypi/aiogram
        :alt: PyPi Package Version
@@ -10,13 +14,17 @@ Welcome to aiogram's documentation!
        :target: https://pypi.python.org/pypi/aiogram
        :alt: PyPi status
 
+    .. image:: https://img.shields.io/pypi/dm/aiogram.svg?style=flat-square
+       :target: https://pypi.python.org/pypi/aiogram
+       :alt: PyPi downloads
+
     .. image:: https://img.shields.io/pypi/pyversions/aiogram.svg?style=flat-square
        :target: https://pypi.python.org/pypi/aiogram
        :alt: Supported python versions
 
-    .. image:: https://img.shields.io/pypi/dm/aiogram.svg?style=flat-square
-       :target: https://pypi.python.org/pypi/aiogram
-       :alt: PyPi downloads
+    .. image:: https://img.shields.io/badge/Telegram%20Bot%20API-4.3-blue.svg?style=flat-square&logo=telegram
+       :target: https://core.telegram.org/bots/api
+       :alt: Telegram Bot API
 
     .. image:: https://img.shields.io/readthedocs/pip/stable.svg?style=flat-square
        :target: http://aiogram.readthedocs.io/en/latest/?badge=latest