diff --git a/flake.lock b/flake.lock
index 82917b9..2d614d3 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,27 +1,12 @@
 {
   "nodes": {
-    "flake-utils": {
-      "locked": {
-        "lastModified": 1659877975,
-        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1665613119,
-        "narHash": "sha256-VTutbv5YKeBGWou6ladtgfx11h6et+Wlkdyh4jPJ3p0=",
+        "lastModified": 1667254466,
+        "narHash": "sha256-YrMQzDVOo+uz5gg1REj2q/uVhJE3WcpkqGiMzh3Da3o=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e06bd4b64bbfda91d74f13cb5eca89485d47528f",
+        "rev": "1b4722674c315de0e191d0d79790b4eac51570a1",
         "type": "github"
       },
       "original": {
@@ -32,7 +17,6 @@
     },
     "root": {
       "inputs": {
-        "flake-utils": "flake-utils",
         "nixpkgs": "nixpkgs"
       }
     }
diff --git a/flake.nix b/flake.nix
index a43c72f..9dd8798 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,44 +5,53 @@
 
   inputs = {
     nixpkgs.url = "nixpkgs/nixos-22.05";
-    flake-utils.url = "github:numtide/flake-utils";
   };
 
-  outputs = { flake-utils, nixpkgs, self }:
-    flake-utils.lib.eachDefaultSystem (system:
-      let
-        config = {};
-        overlays = [ (import ./nix/haskell-overlay.nix) ];
-        pkgs = import nixpkgs { inherit config overlays system; };
-      in rec {
-        defaultPackage = packages.website;
-        defaultApp = apps.hakyll-site;
+  outputs = { nixpkgs, self }: let
+    system = "x86_64-linux";
+    overlays = [ (import ./nix/haskell-overlay.nix) ];
+    pkgs = import nixpkgs { inherit overlays system; };
+  in rec {
+    overlays = {
+      haskell-overlay = import ./nix/haskell-overlay.nix;
+      default = self.overlays.haskell-overlay;
+    };
 
-        packages = with pkgs.myHaskellPackages; { inherit ssg website; };
+    packages.${system} = with pkgs.myHaskellPackages; {
+      inherit ssg website;
+      default = website;
+    };
 
-        apps.hakyll-site = let
-          drv = packages.ssg;
-          exePath = "/bin/hakyll-site";
-        in {
-          type = "app";
-          program = "${drv}${exePath}";
-        };
+    apps.${system} = {
+      hakyll-site = let
+        drv = packages.ssg;
+        exePath = "/bin/hakyll-site";
+      in {
+        type = "app";
+        program = "${drv}${exePath}";
+      };
+      default = self.apps.${system}.hakyll-site;
+    };
 
-        devShell = pkgs.myHaskellPackages.shellFor {
-          packages = p: [ p.ssg ];
+    devShells.${system}.default = pkgs.myHaskellPackages.shellFor {
+      packages = p: [ p.ssg ];
 
-          buildInputs = with pkgs.myHaskellPackages; [
-            # ssg
+      buildInputs = with pkgs.myHaskellPackages; [
+        # ssg
 
-            # Helpful tools for `nix develop` shells
-            ghcid                   # https://github.com/ndmitchell/ghcid
-            haskell-language-server # https://github.com/haskell/haskell-language-server
-            hlint                   # https://github.com/ndmitchell/hlint
-            ormolu                  # https://github.com/tweag/ormolu
-          ];
+        # Helpful tools for `nix develop` shells
+        ghcid                   # https://github.com/ndmitchell/ghcid
+        haskell-language-server # https://github.com/haskell/haskell-language-server
+        hlint                   # https://github.com/ndmitchell/hlint
+        ormolu                  # https://github.com/tweag/ormolu
+      ];
 
-          withHoogle = true;
-        };
-      }
-    );
+      withHoogle = true;
+    };
+
+    hydraJobs = {
+      ssg.${system} = self.packages.${system}.ssg;
+      website.${system} = self.packages.${system}.website;
+    };
+  };
 }