diff --git a/cogs/dpy.py b/cogs/dpy.py
index b0b16bc0..2acccbbe 100644
--- a/cogs/dpy.py
+++ b/cogs/dpy.py
@@ -223,6 +223,9 @@ async def auto_archive_old_forum_threads(self):
             if thread.archived or thread.flags.pinned:
                 continue
 
+            if thread.owner not in thread.members or thread.owner is None: # shouldnt need to check cache
+                await thread.edit(archived=True, reason='Auto-archived because OP left the thread.')
+
             if thread.last_message_id is None:
                 continue