diff --git a/nixos/machines/lobon/configuration.nix b/nixos/machines/lobon/configuration.nix
index 506d637..8191acf 100644
--- a/nixos/machines/lobon/configuration.nix
+++ b/nixos/machines/lobon/configuration.nix
@@ -28,8 +28,8 @@
     };
     backupKey = {
       sopsFile = ./backupKey.yaml;
-      owner = "root";
-      group = "root";
+      owner = "mailman";
+      group = "mailman";
       mode = "0400";
     };
   };