diff --git a/nix/sources.json b/nix/sources.json
index b7bd853..ed9e21b 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -32,7 +32,7 @@
     "nix-hexchen": {
         "ref": "main",
         "repo": "https://gitlab.com/hexchen/nixfiles.git",
-        "rev": "ea33a93da0bac59b757e7a059028526f47c2b852",
+        "rev": "5369d696f5381bf410408224fd8fa68480a96ff1",
         "type": "git"
     },
     "nixos-mailserver": {
diff --git a/pkgs/default.nix b/pkgs/default.nix
index 053a4a9..286a3b4 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -1,8 +1,8 @@
-{ ... }:
+{ config ? {}, system ? builtins.currentSystem, ... }@args:
 
 let
   sources = import ../nix/sources.nix;
-  pkgs = import sources.nixpkgs { config = { allowUnfree = true; }; };
+  pkgs = import sources.nixpkgs args;
 
   callPackage = pkgs.lib.callPackageWith (pkgs // newpkgs);