diff --git a/telethon/extensions/binaryreader.py b/telethon/extensions/binaryreader.py
index a138c255..5382caaf 100644
--- a/telethon/extensions/binaryreader.py
+++ b/telethon/extensions/binaryreader.py
@@ -2,7 +2,7 @@
 This module contains the BinaryReader utility class.
 """
 import os
-from datetime import datetime
+from datetime import datetime, timezone
 from io import BufferedReader, BytesIO
 from struct import unpack
 
@@ -120,7 +120,10 @@ class BinaryReader:
            into a Python datetime object.
         """
         value = self.read_int()
-        return None if value == 0 else datetime.utcfromtimestamp(value)
+        if value == 0:
+            return None
+        else:
+            return datetime.fromtimestamp(value, tz=timezone.utc)
 
     def tgread_object(self):
         """Reads a Telegram object."""
diff --git a/telethon/tl/tlobject.py b/telethon/tl/tlobject.py
index 3561f18f..52b86b71 100644
--- a/telethon/tl/tlobject.py
+++ b/telethon/tl/tlobject.py
@@ -24,10 +24,6 @@ class TLObject:
                 return '[{}]'.format(
                     ', '.join(TLObject.pretty_format(x) for x in obj)
                 )
-            elif isinstance(obj, datetime):
-                return 'datetime.utcfromtimestamp({})'.format(
-                    int(obj.timestamp())
-                )
             else:
                 return repr(obj)
         else: