diff --git a/flake.nix b/flake.nix
index 4c771e1..f7ec27a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -446,7 +446,7 @@
             }];
           };
 
-          baldur = inputs.nixpkgs.lib.nixosSystem {
+          baldur = inputs.nixpkgs-u.lib.nixosSystem {
             system = "x86_64-linux";
             modules = commonModules ++ [
               ./modules/nixos/server
@@ -457,7 +457,7 @@
               # ./modules/nixos/users/tiziano.nix
               # S3 cache read
               # ./modules/nixos/s3_cache_read.nix
-            ] ++ homeManagerModules ++ [{
+            ] ++ homeManagerUModules ++ [{
               home-manager.users.bertof = import ./instances/baldur/hm.nix;
               #   home-manager.users.tiziano = import ./instances/baldur/hm_tiziano.nix;
             }];