diff --git a/aiogram/api.py b/aiogram/api.py
index a1303773..1afb856d 100644
--- a/aiogram/api.py
+++ b/aiogram/api.py
@@ -111,7 +111,7 @@ class ApiMethods:
     GET_CHAT_ADMINISTRATORS = 'getChatAdministrators'
     GET_CHAT_MEMBERS_COUNT = 'getChatMembersCount'
     GET_CHAT_MEMBER = 'getChatMember'
-    ANSWER_CALLBACK_QUERY = 'answerCallbackQuery'  # TODO
+    ANSWER_CALLBACK_QUERY = 'answerCallbackQuery'
     EDIT_MESSAGE_TEXT = 'editMessageText'  # TODO
     EDIT_MESSAGE_CAPTION = 'editMessageCaption'  # TODO
     EDIT_MESSAGE_REPLY_MARKUP = 'editMessageReplyMarkup'  # TODO
diff --git a/aiogram/bot.py b/aiogram/bot.py
index d03cf16c..fa26df8e 100644
--- a/aiogram/bot.py
+++ b/aiogram/bot.py
@@ -319,3 +319,7 @@ class AIOGramBot:
         payload = generate_payload(**locals())
         raw = await self.request(ApiMethods.GET_CHAT_MEMBER, payload)
         return self.prepare_object(ChatMember.de_json(raw))
+
+    async def answer_callback_query(self, callback_query_id, text=None, show_alert=None, url=None, cache_time=None ):
+        payload = generate_payload(**locals())
+        return await self.request(ApiMethods.LEAVE_CHAT, payload)