diff --git a/flake.lock b/flake.lock
index d4f92a9..0c747cd 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,23 +1,5 @@
 {
   "nodes": {
-    "flake-utils": {
-      "inputs": {
-        "systems": "systems"
-      },
-      "locked": {
-        "lastModified": 1687171271,
-        "narHash": "sha256-BJlq+ozK2B1sJDQXS3tzJM5a+oVZmi1q0FlBK/Xqv7M=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "abfb11bd1aec8ced1c9bb9adfe68018230f4fb3c",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1687288566,
@@ -36,24 +18,8 @@
     },
     "root": {
       "inputs": {
-        "flake-utils": "flake-utils",
         "nixpkgs": "nixpkgs"
       }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index 10a1a60..f54a535 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,23 +1,22 @@
 {
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.05";
-    flake-utils.url = "github:numtide/flake-utils";
   };
 
-  outputs = { self, nixpkgs, flake-utils }:
-    flake-utils.lib.eachDefaultSystem (system:
-      let
-        pkgs = nixpkgs.legacyPackages.${system};
-        atauPkgs = {
-          atau-wallpapers = pkgs.callPackage ./atau-wallpapers/default.nix { };
-          theme-platinum9 = pkgs.callPackage ./theme-platinum9/default.nix { };
-        };
-      in
-      {
-        packages = rec {
-          default = atauPkgs.theme-platinum9;
-        } // atauPkgs;
+  outputs = { self, nixpkgs }:
+    let
+      system = "x86_64-linux";
+      pkgs = nixpkgs.legacyPackages.${system};
+      atauPkgs = {
+        atau-wallpapers = pkgs.callPackage ./atau-wallpapers/default.nix { };
+        theme-platinum9 = pkgs.callPackage ./theme-platinum9/default.nix { };
+      };
+    in
+    {
+      packages.${system} = {
+        default = atauPkgs.theme-platinum9;
+      } // atauPkgs;
 
-        overlay = final: prev: { } // atauPkgs;
-      });
+      overlays.default = final: prev: atauPkgs;
+    };
 }