diff --git a/telethon/tl/custom/button.py b/telethon/tl/custom/button.py
index 0ed9a43d..1b7d71e4 100644
--- a/telethon/tl/custom/button.py
+++ b/telethon/tl/custom/button.py
@@ -54,7 +54,8 @@ class Button:
             types.KeyboardButtonGame,
             types.KeyboardButtonSwitchInline,
             types.KeyboardButtonUrl,
-            types.InputKeyboardButtonUrlAuth
+            types.InputKeyboardButtonUrlAuth,
+            types.KeyboardButtonWebView,
         ))
 
     @staticmethod