diff --git a/flake.lock b/flake.lock
index 35600de..d329141 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,57 +1,42 @@
 {
   "nodes": {
-    "flake-utils": {
-      "inputs": {
-        "systems": "systems"
-      },
-      "locked": {
-        "lastModified": 1731533236,
-        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1743583204,
-        "narHash": "sha256-F7n4+KOIfWrwoQjXrL2wD9RhFYLs2/GGe/MQY1sSdlE=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "2c8d3f48d33929642c1c12cd243df4cc7d2ce434",
-        "type": "github"
+        "lastModified": 1772198003,
+        "narHash": "sha256-UCaQQ8zmHUocQIgCl+53Jj6NuwqrVKtmv7obE9r6wnw=",
+        "rev": "dd9b079222d43e1943b6ebd802f04fd959dc8e61",
+        "type": "tarball",
+        "url": "https://releases.nixos.org/nixos/unstable/nixos-26.05pre955442.dd9b079222d4/nixexprs.tar.xz"
       },
       "original": {
-        "id": "nixpkgs",
-        "ref": "nixos-unstable",
-        "type": "indirect"
+        "type": "tarball",
+        "url": "https://channels.nixos.org/nixos-unstable/nixexprs.tar.xz"
       }
     },
     "root": {
       "inputs": {
-        "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "zig": "zig"
       }
     },
-    "systems": {
+    "zig": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
       "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
+        "lastModified": 1772339787,
+        "narHash": "sha256-GoQhRJV7L+SPc4goVhOF9N9Wd7PA42e40d+h7MVgVCI=",
+        "ref": "refs/heads/main",
+        "rev": "05eab00ce62b16af581338ff73d67de55c681d9e",
+        "revCount": 1629,
+        "type": "git",
+        "url": "https://git.ocjtech.us/jeff/zig-overlay.git"
       },
       "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
+        "type": "git",
+        "url": "https://git.ocjtech.us/jeff/zig-overlay.git"
       }
     }
   },
diff --git a/flake.nix b/flake.nix
index 2496fa9..114a1b6 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,30 +1,46 @@
 {
   inputs = {
     nixpkgs = {
-      url = "nixpkgs/nixos-unstable";
+      url = "https://channels.nixos.org/nixos-unstable/nixexprs.tar.xz";
     };
-    flake-utils = {
-      url = "github:numtide/flake-utils";
+    zig = {
+      url = "git+https://git.ocjtech.us/jeff/zig-overlay.git";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+      };
     };
   };
 
-  outputs = {
-    nixpkgs,
-    flake-utils,
-    ...
-  }:
-    flake-utils.lib.eachDefaultSystem (
-      system: let
-        pkgs = import nixpkgs {
+  outputs =
+    {
+      nixpkgs,
+      zig,
+      ...
+    }:
+    let
+      lib = nixpkgs.lib;
+      platforms = lib.attrNames zig.packages;
+      makePackages =
+        system:
+        import nixpkgs {
           inherit system;
+          overlays = [ ];
         };
-      in {
-        devShells.default = pkgs.mkShell {
+      forAllSystems = (function: lib.genAttrs platforms (system: function (makePackages system)));
+    in
+    {
+      devShells = forAllSystems (pkgs: {
+        default = pkgs.mkShell {
           nativeBuildInputs = [
-            pkgs.zig_0_14
+            zig.packages.${pkgs.stdenv.hostPlatform.system}.master
+            pkgs.pkg-config
+            pkgs.reuse
+            pkgs.pinact
+          ];
+          buildInputs = [
             pkgs.notmuch
           ];
         };
-      }
-    );
+      });
+    };
 }