diff --git a/flake.lock b/flake.lock
index 50b3267..313cda4 100755
--- a/flake.lock
+++ b/flake.lock
@@ -21,18 +21,36 @@
         "type": "github"
       }
     },
+    "nixos-grub-themes": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1769794759,
+        "narHash": "sha256-1doG74WkbtUpawduk9f8szyzWsw3Liblrh2z+2jQnw4=",
+        "owner": "jeslie0",
+        "repo": "nixos-grub-themes",
+        "rev": "5e75f9b3ea9061dca6c53d34e166e08bf9ebc7c7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "jeslie0",
+        "repo": "nixos-grub-themes",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1771903837,
-        "narHash": "sha256-sdaqdnsQCv3iifzxwB22tUwN/fSHoN7j2myFW5EIkGk=",
+        "lastModified": 1702151865,
+        "narHash": "sha256-9VAt19t6yQa7pHZLDbil/QctAgVsA66DLnzdRGqDisg=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "e764fc9a405871f1f6ca3d1394fb422e0a0c3951",
+        "rev": "666fc80e7b2afb570462423cb0e1cf1a3a34fedd",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-25.11",
+        "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -53,10 +71,27 @@
         "type": "github"
       }
     },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1771903837,
+        "narHash": "sha256-sdaqdnsQCv3iifzxwB22tUwN/fSHoN7j2myFW5EIkGk=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "e764fc9a405871f1f6ca3d1394fb422e0a0c3951",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-25.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "home-manager": "home-manager",
-        "nixpkgs": "nixpkgs",
+        "nixos-grub-themes": "nixos-grub-themes",
+        "nixpkgs": "nixpkgs_2",
         "nixpkgs-unstable": "nixpkgs-unstable"
       }
     }
diff --git a/flake.nix b/flake.nix
index 9084cae..ba6f713 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,6 +5,7 @@
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-25.11";
     nixpkgs-unstable.url = "github:nixos/nixpkgs/nixpkgs-unstable"; # used for some packages
+    nixos-grub-themes.url = "github:jeslie0/nixos-grub-themes";
     home-manager = {
       url = "github:nix-community/home-manager/release-25.11";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -15,7 +16,7 @@
 #	url = "github:nix-community/nixvim/nixos-25.11";
    # };
 
-  outputs = { self, nixpkgs, nixpkgs-unstable, home-manager,... }@inputs: 
+  outputs = { self, nixpkgs, nixpkgs-unstable, home-manager, nixos-grub-themes, ... }@inputs: 
   let
     system = "x86_64-linux";
     pkgs = nixpkgs.legacyPackages.${system};
diff --git a/hosts/laptop/configuration.nix b/hosts/laptop/configuration.nix
index 08c13c0..2d09193 100755
--- a/hosts/laptop/configuration.nix
+++ b/hosts/laptop/configuration.nix
@@ -15,6 +15,14 @@
     ../../modules/nixos/udevsimple.nix
   ];
 
+
+
+# grub theme
+boot.loader.grub = {
+    theme = inputs.nixos-grub-themes.packages.${pkgs.system}.nixos; # if you want to use nixos grub theme
+};
+
+
   nix.nixPath = [
     "nixpkgs=${inputs.nixpkgs.outPath}"
     "home-manager=${inputs.home-manager.outPath}"
diff --git a/modules/scripts/manix.nix b/modules/scripts/manix.nix
index 9ff79c8..2ebad5c 100644
--- a/modules/scripts/manix.nix
+++ b/modules/scripts/manix.nix
@@ -1,4 +1,4 @@
-{ writeShellApplication, manix, ripgrep, fzf, stdenv, ... }:
+{ writeShellApplication, manix, ripgrep, fzf, ... }:
 
 let
   cacheTime = "10";
@@ -10,7 +10,6 @@ writeShellApplication {
 		manix
         ripgrep
         fzf
-        stdenv
 	];
     text = ''
 CACHE_DIR="''${XDG_CACHE_HOME:-$HOME/.cache}"