diff --git a/pyrogram/types/messages_and_media/message.py b/pyrogram/types/messages_and_media/message.py
index ab73dfed2e..e8a1620630 100644
--- a/pyrogram/types/messages_and_media/message.py
+++ b/pyrogram/types/messages_and_media/message.py
@@ -1586,7 +1586,7 @@ async def reply_animation(
         duration: int = 0,
         width: int = 0,
         height: int = 0,
-        thumb: str = None,
+        thumb: Union[str, BinaryIO] = None,
         disable_notification: bool = None,
         business_connection_id: str = None,
         allow_paid_broadcast: bool = None,
@@ -1657,7 +1657,7 @@ async def reply_animation(
             height (``int``, *optional*):
                 Animation height.
 
-            thumb (``str``, *optional*):
+            thumb (``str`` | ``BinaryIO``, *optional*):
                 Thumbnail of the animation file sent.
                 The thumbnail should be in JPEG format and less than 200 KB in size.
                 A thumbnail's width and height should not exceed 320 pixels.
@@ -1774,7 +1774,7 @@ async def reply_audio(
         duration: int = 0,
         performer: str = None,
         title: str = None,
-        thumb: str = None,
+        thumb: Union[str, BinaryIO] = None,
         disable_notification: bool = None,
         message_thread_id: int = None,
         effect_id: int = None,
@@ -1839,7 +1839,7 @@ async def reply_audio(
             title (``str``, *optional*):
                 Track name.
 
-            thumb (``str``, *optional*):
+            thumb (``str`` | ``BinaryIO``, *optional*):
                 Thumbnail of the music file album cover.
                 The thumbnail should be in JPEG format and less than 200 KB in size.
                 A thumbnail's width and height should not exceed 320 pixels.
@@ -3557,7 +3557,7 @@ async def reply_video(
         duration: int = 0,
         width: int = 0,
         height: int = 0,
-        thumb: str = None,
+        thumb: Union[str, BinaryIO] = None,
         supports_streaming: bool = True,
         disable_notification: bool = None,
         message_thread_id: int = None,
@@ -3635,7 +3635,7 @@ async def reply_video(
             height (``int``, *optional*):
                 Video height.
 
-            thumb (``str``, *optional*):
+            thumb (``str`` | ``BinaryIO``, *optional*):
                 Thumbnail of the video sent.
                 The thumbnail should be in JPEG format and less than 200 KB in size.
                 A thumbnail's width and height should not exceed 320 pixels.
@@ -3758,7 +3758,7 @@ async def reply_video_note(
         quote: bool = None,
         duration: int = 0,
         length: int = 1,
-        thumb: str = None,
+        thumb: Union[str, BinaryIO] = None,
         disable_notification: bool = None,
         message_thread_id: int = None,
         effect_id: int = None,
@@ -3813,7 +3813,7 @@ async def reply_video_note(
             length (``int``, *optional*):
                 Video width and height.
 
-            thumb (``str``, *optional*):
+            thumb (``str`` | ``BinaryIO``, *optional*):
                 Thumbnail of the video sent.
                 The thumbnail should be in JPEG format and less than 200 KB in size.
                 A thumbnail's width and height should not exceed 320 pixels.