diff --git a/scripts/delete-unused-users.py b/scripts/delete-unused-users.py
index 46ff75a33..bbfe1214f 100755
--- a/scripts/delete-unused-users.py
+++ b/scripts/delete-unused-users.py
@@ -10,6 +10,9 @@
 make sure they aren't active right now. This will require users to
 log in again the next time they use the hub, but that's probably
 ok.
+
+Core functionality from @minrk:
+https://discourse.jupyter.org/t/is-there-a-way-to-bulk-delete-old-users/20866/3
 """
 import argparse
 import asyncio