diff --git a/default.nix b/default.nix
index 727a44a..9028c7c 100644
--- a/default.nix
+++ b/default.nix
@@ -1,6 +1,12 @@
-{ stdenv, zig_0_12, lib, ... }:
+{ stdenv,
+  zig_0_12,
+  lib,
+  version ? "git",
+  ...
+}:
 stdenv.mkDerivation {
-  name = "artificer";
+  pname = "artificer";
+  inherit version;
   src = lib.cleanSource ./.;
 
   nativeBuildInputs = [
diff --git a/flake.nix b/flake.nix
index 4ba4eb2..ad70a24 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,9 +7,10 @@
 
   outputs = { self, nixpkgs }:
   let
+    version = builtins.substring 0 8 self.lastModifiedDate;
     pkgs = nixpkgs.legacyPackages.x86_64-linux;
   in
   {
-    packages.x86_64-linux.default = pkgs.callPackage ./. { };
+    packages.x86_64-linux.default = pkgs.callPackage ./. { inherit version; };
   };
 }