diff --git a/modules/users/friends.nix b/modules/users/friends.nix
index 7914906..58620aa 100644
--- a/modules/users/friends.nix
+++ b/modules/users/friends.nix
@@ -6,12 +6,14 @@ let
 in
 {
   users.users = {
+    # Raito: unused since a while, it was made for working on the production database of Hydra.
     ninjatrappeur = {
       isNormalUser = true;
       home = "/home/ninjatrappeur";
       shell = "/run/current-system/sw/bin/zsh";
       uid = 2000;
       extraGroups = trustedFriendGroups;
+      expires = "2024-01-01";
       openssh.authorizedKeys.keyFiles = [ ./keys/ninjatrappeur.keys ];
     };
     linus = {