diff --git a/discord/threads.py b/discord/threads.py
index 1acf041cd..cebb9fb4f 100644
--- a/discord/threads.py
+++ b/discord/threads.py
@@ -91,7 +91,7 @@ class Thread(Messageable, Hashable):
     id: :class:`int`
         The thread ID.
     parent_id: :class:`int`
-        The parent :class:`TextChannel` ID this thread belongs to.
+        The parent :class:`TextChannel` or :class:`ForumChannel` ID this thread belongs to.
     owner_id: :class:`int`
         The user's ID that created this thread.
     last_message_id: Optional[:class:`int`]