diff --git a/hosts/nixos-laptop/configuration.nix b/hosts/nixos-laptop/configuration.nix
index 4e514e29..baa88821 100644
--- a/hosts/nixos-laptop/configuration.nix
+++ b/hosts/nixos-laptop/configuration.nix
@@ -1,4 +1,4 @@
-{ lib, config, pkgs, master, ... }: {
+{ lib, config, pkgs, unstable, ... }: {
 
   # Set your time zone.
   time.timeZone = "Asia/Tokyo";
@@ -31,8 +31,8 @@
     opengl.driSupport32Bit = true;
     opengl.driSupport = true;
     # opengl.extraPackages = with pkgs; [ nvidia-vaapi-driver ];
-    
-    nvidia = with master.pkgs {
+    # https://nixpk.gs/pr-tracker.html?pr=244060
+    nvidia = with unstable.pkgs {
       open = false;
       package = config.boot.kernelPackages.nvidiaPackages.stable;
       # powerManagement.finegrained = true;