diff --git a/flake.nix b/flake.nix
index 69f6f4c..7e4de9f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -58,6 +58,7 @@
         system = "x86_64-linux";
         modules = [
           self.nixosModules.beatific
+          (pinNixpkgs nixpkgs-2311)
           ./machine/centroid
         ];
       };
diff --git a/machine/centroid/default.nix b/machine/centroid/default.nix
index ac41118..b27f3f5 100644
--- a/machine/centroid/default.nix
+++ b/machine/centroid/default.nix
@@ -18,6 +18,7 @@
   };
 
   networking.networkmanager.enable = true;
+  users.users.tvb.extraGroups = [ "networkmanager" ];
 
   system.stateVersion = "23.11";
 }