diff --git a/heroku/inline/types.py b/heroku/inline/types.py
index 8694ef7..668f2a1 100644
--- a/heroku/inline/types.py
+++ b/heroku/inline/types.py
@@ -140,7 +140,6 @@ class InlineCall(CallbackQuery, InlineMessage):
             "from_user",
             "message",
             "inline_message_id",
-            "chat_instance",
             "data",
             "game_short_name",
         }: