diff --git a/aiogram/types/__init__.py b/aiogram/types/__init__.py
index dad21861..afecda8c 100644
--- a/aiogram/types/__init__.py
+++ b/aiogram/types/__init__.py
@@ -1,4 +1,6 @@
+import datetime
 import json
+import time
 
 
 class Serializable:
@@ -26,6 +28,8 @@ class Deserializable:
                 continue
             if hasattr(attr, 'to_json'):
                 attr = getattr(attr, 'to_json')()
+            elif isinstance(attr, datetime.datetime):
+                attr = int(time.mktime(attr.timetuple()))
             result[item] = attr
         return result
 
diff --git a/aiogram/types/callback_query.py b/aiogram/types/callback_query.py
index a7db0d17..db7bdea1 100644
--- a/aiogram/types/callback_query.py
+++ b/aiogram/types/callback_query.py
@@ -2,7 +2,7 @@ from . import Deserializable
 
 
 class CallbackQuery(Deserializable):
-    __slots__ = ('id', 'from', 'message', 'inline_message_id', 'chat_instance', 'data', 'game_short_name')
+    __slots__ = ('id', 'from_user', 'message', 'inline_message_id', 'chat_instance', 'data', 'game_short_name')
 
     def __init__(self, id, from_user, message, inline_message_id, chat_instance, data, game_short_name):
         self.data = data
diff --git a/aiogram/types/message.py b/aiogram/types/message.py
index 4588e4f2..46a1852a 100644
--- a/aiogram/types/message.py
+++ b/aiogram/types/message.py
@@ -8,7 +8,7 @@ from .user import User
 
 class Message(Deserializable):
     __slots__ = (
-        'message_id', 'from', 'date', 'chat', 'forward_from', 'forward_from_chat', 'forward_from_message_id',
+        'message_id', 'from_user', 'date', 'chat', 'forward_from', 'forward_from_chat', 'forward_from_message_id',
         'forward_date', 'reply_to_message', 'edit_date', 'text', 'entities', 'audio', 'document', 'game', 'photo',
         'sticker', 'video', 'voice', 'video_note', 'new_chat_members', 'caption', 'contact', 'location', 'venue',
         'new_chat_member', 'left_chat_member', 'new_chat_title', 'new_chat_photo', 'delete_chat_photo',