diff --git a/role/base/default.nix b/role/base/default.nix
index 102e9af..3d1413f 100644
--- a/role/base/default.nix
+++ b/role/base/default.nix
@@ -47,6 +47,7 @@
 
   nix.trustedUsers = [ "root" "@wheel" ];
 
+  users.mutableUsers = false;
   users.users = rec {
     root.openssh.authorizedKeys.keys =
       lib.flatten (map (u: u.openssh.authorizedKeys.keys) [ fhauser das-g ]);