diff --git a/nixbld-etc-nixos/configuration.nix b/nixbld-etc-nixos/configuration.nix
index b526c2d..023bef3 100644
--- a/nixbld-etc-nixos/configuration.nix
+++ b/nixbld-etc-nixos/configuration.nix
@@ -156,6 +156,14 @@ in
     isNormalUser = true;
     extraGroups = ["plugdev" "dialout"];
   };
+  users.extraUsers.konstantin = {
+    isNormalUser = true;
+    extraGroups = ["plugdev" "dialout"];
+  };
+  users.extraUsers.steinb = {
+    isNormalUser = true;
+    extraGroups = ["plugdev" "dialout"];
+  };
   users.extraUsers.nix = {
     isNormalUser = true;
   };