diff --git a/pkgs/servers/mail/mailman/python.nix b/pkgs/servers/mail/mailman/python.nix
index f99f5a9bc825..c8fd7159f717 100644
--- a/pkgs/servers/mail/mailman/python.nix
+++ b/pkgs/servers/mail/mailman/python.nix
@@ -26,6 +26,7 @@ lib.fix (
             [1] 72a14ea563a3f5bf85db659349a533fe75a8b0ce
             [2] f931bc81d63f5cfda55ac73d754c87b3fd63b291
           */
+          # https://gitlab.com/mailman/hyperkitty/-/merge_requests/681
           django = super.django_4;
 
           django-allauth = super.django-allauth.overrideAttrs (