diff --git a/nixos/doc/manual/release-notes/rl-2605.section.md b/nixos/doc/manual/release-notes/rl-2605.section.md
index 364e2d3cfa12..47e64b314df7 100644
--- a/nixos/doc/manual/release-notes/rl-2605.section.md
+++ b/nixos/doc/manual/release-notes/rl-2605.section.md
@@ -223,6 +223,8 @@
 
 - `post-resume.target` has been removed. See {manpage}`systemd.special(7)` about `sleep.target` for instructions on ordering a process after resume with `ExecStop=`.
 
+- `services.vsftpd` no longer automatically configures a PAM module.  This means configurations using `services.vsftpd.localUsers` will no longer work unless `services.vsftpd.enableVirtualUsers` and `services.vsftpd.userDbPath` are also configured.  The old behaviour can be restored by setting `security.pam.services.vsftpd.enable = true`, although this only ever worked by accident and may not be secure.
+
 - `services.kubernetes.addons.dns.coredns` has been renamed to `services.kubernetes.addons.dns.corednsImage` and now expects a
 package instead of attrs. Now, by default, nixpkgs.coredns in conjunction with dockerTools.buildImage is used, instead
 of pulling the upstream container image from Docker Hub. If you want the old behavior, you can set: