diff --git a/machines/kat-mail-test/modo.nix b/machines/kat-mail-test/modo.nix
index 00768e1..0850123 100644
--- a/machines/kat-mail-test/modo.nix
+++ b/machines/kat-mail-test/modo.nix
@@ -12,6 +12,7 @@ in
   users.users.moderators = {
     shell = pkgs.zsh;
     isNormalUser = true;
+    extraGroups = [ "postdrop" ];
     openssh.authorizedKeys.keys = config.users.users.root.openssh.authorizedKeys.keys;
   };
   home-manager.users.moderators = {