diff --git a/nixos/doc/manual/release-notes/rl-2405.section.md b/nixos/doc/manual/release-notes/rl-2405.section.md
index 06d6ebbd2b0a..8408f2e3492b 100644
--- a/nixos/doc/manual/release-notes/rl-2405.section.md
+++ b/nixos/doc/manual/release-notes/rl-2405.section.md
@@ -466,6 +466,8 @@ The pre-existing [services.ankisyncd](#opt-services.ankisyncd.enable) has been m
 - `services.zfs.zed.enableMail` now uses the global `sendmail` wrapper defined by an email module
   (such as msmtp or Postfix). It no longer requires using a special ZFS build with email support.
 
+- `castopod` has some migration actions to be taken in case of a S3 setup. Some new features may also need some manual migration actions. See [https://code.castopod.org/adaures/castopod/-/releases](https://code.castopod.org/adaures/castopod/-/releases) for more informations.
+
 - `nextcloud-setup.service` no longer changes the group of each file & directory inside `/var/lib/nextcloud/{config,data,store-apps}` if one of these directories has the wrong owner group. This was part of transitioning the group used for `/var/lib/nextcloud`, but isn't necessary anymore.
 
 - `services.kavita` now uses the freeform option `services.kavita.settings` for the application settings file.