diff --git a/butterrobot/objects.py b/butterrobot/objects.py
index 926e6a7..55051c7 100644
--- a/butterrobot/objects.py
+++ b/butterrobot/objects.py
@@ -7,7 +7,7 @@ from typing import Text, Optional
 class Message:
     text: Text
     chat: Text
-    author: Text
+    author: Text = None
     from_bot: bool = False
     date: Optional[datetime] = None
     id: Optional[Text] = None