diff --git a/machines/lambda/default.nix b/machines/lambda/default.nix
index 1e8439a..127dcc8 100644
--- a/machines/lambda/default.nix
+++ b/machines/lambda/default.nix
@@ -24,6 +24,11 @@
   ];
 
   # File systems configuration for using the installer's partition layout
+
+
+ nix.package = lib.mkForce pkgs.nixUnstable; 
+
+
   fileSystems = {
     "/" = {
       device = "/dev/disk/by-label/NIXOS_SD";