diff --git a/modules/users/friends.nix b/modules/users/friends.nix
index 8d5ea3f..684353f 100644
--- a/modules/users/friends.nix
+++ b/modules/users/friends.nix
@@ -1,11 +1,26 @@
-{ ... }: {
+{ ... }:
+let
+  trustedFriendGroups = [
+    "production-hydra-db"
+  ];
+in
+{
   users.users = {
     ninjatrappeur = {
       isNormalUser = true;
       home = "/home/ninjatrappeur";
       shell = "/run/current-system/sw/bin/zsh";
       uid = 2000;
+      extraGroups = trustedFriendGroups;
       openssh.authorizedKeys.keyFiles = [ ./keys/ninjatrappeur.keys ];
     };
+    linus = {
+      isNormalUser = true;
+      home = "/home/linus";
+      shell = "/run/current-system/sw/bin/zsh";
+      uid = 2001;
+      extraGroups = trustedFriendGroups;
+      openssh.authorizedKeys.keyFiles = [ ./keys/linus.keys ];
+    };
   };
 }
diff --git a/modules/users/keys/linus.keys b/modules/users/keys/linus.keys
new file mode 100644
index 0000000..59249fb
--- /dev/null
+++ b/modules/users/keys/linus.keys
@@ -0,0 +1,4 @@
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAACAQDf7hGFfUHhtgYY0G/Dh9isjIxkvUjlAKAMvLIZs5NLXwEfnxDTVZW/ijfF2qDozAmYQHZqbeyhJX7YlO6nYjWRBxqBeqAMHhtu3PkiysSCCUymhJ2uDHUAox+BT8IGE3sCKYIXRdmSFoibgQad9AHsQ6OLoIaNgMV7rspdBcO/CjyCkHN440XhQKz/Sq2SyygI9Qkuz0qDdQOgIraVi//EXDAvij0QXlkmh+3xBJwEqt8Pe1KP9itwvGyzGX/aAheCBSf7HPcLzJUgcWymW6FL4AE0KqNVb8Q8ahaEM5UgbXUCauDON8H4OR1Zngszw128wklwxOr7q5gB++Ks1OQlHMGgiVYZ2wC0DXlx68BKSMNnJRHWCI4r63a3bAWGCqKbcCHpimjPAHisPoaoHffVUaIpj65klj+GkoHAgo/pl0S6o4OqVpOau3Qkn95D1KDbUiE1l0HdgZaRmOKRvTKec1V3tfB2rA83Q1cZCWC5ZSwk3wihYPywMyIo6G8f2M2bFot7k/sS9ZMSle6oZDrc6A8qWnaxMZYbEXdFGy02550vdymshJ9RpSLfK1oBKoKk7yL2hk1UHm6obXYXn/F0KvDr7nAM6gOf9NnOrPHKt14WDb0GsZwNd34g1RCcBUcXewh4ZJOHerzsS2h3D30BNQUNCaF8ZQr6FYXp7v9gnQ==
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIN3EmXYSXsimS+vlGYtfTkOGuwvkXU0uHd2yYKLOxD2F
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIJWYrcu8usyqdLv4XO4i5TPaQhB+lH3Xbu2uz64hQe3
+sk-ssh-ed25519@openssh.com AAAAGnNrLXNzaC1lZDI1NTE5QG9wZW5zc2guY29tAAAAICDgQA1A1uHJsqLsSLLkuWNlxXrpGRD6Qx11WBbfP+SmAAAAEXNzaDpsaW51c0BiZWl3ZXJr