diff --git a/roles/nixpkgs-dev.nix b/roles/nixpkgs-dev.nix
index c92937d..b2813a6 100644
--- a/roles/nixpkgs-dev.nix
+++ b/roles/nixpkgs-dev.nix
@@ -4,10 +4,17 @@
 
 {
 
+  nixpkgs = {
+    config = {
+      allowUnfree = true;
+    };
+  };
+
   environment = {
     systemPackages = with pkgs; [
       nix-universal-prefetch   # Uses nixpkgs fetchers to figure out hashes
       cabal2nix                # Convert Cabal files into Nix build instructions
+      nodePackages.node2nix    # Generate Nix expressions to build NPM packages
     ];
   };