diff --git a/discord_slash/client.py b/discord_slash/client.py
index 97287f056..46d53d3a0 100644
--- a/discord_slash/client.py
+++ b/discord_slash/client.py
@@ -26,6 +26,8 @@ class SlashCommand:
     :type sync_on_cog_reload: bool
     :param override_type: Whether to override checking type of the client and try register event.
     :type override_type: bool
+    :param application_id: The application id of the bot, required only when the application id and bot id are different. (old bots)
+    :type application_id: int
 
     .. note::
         If ``sync_on_cog_reload`` is enabled, command syncing will be triggered when :meth:`discord.ext.commands.Bot.reload_extension`
diff --git a/discord_slash/model.py b/discord_slash/model.py
index 6fe252644..2a66e78f3 100644
--- a/discord_slash/model.py
+++ b/discord_slash/model.py
@@ -72,6 +72,7 @@ class CommandData:
     :ivar description: Description of the command.
     :ivar options: List of :class:`OptionData`.
     :ivar id: Command id, this is received from discord so may not be present
+    :ivar application_id: The application id of the bot, required only when the application id and bot id are different. (old bots)
     """
 
     def __init__(