diff --git a/pkgs/development/ruby-modules/bundix/default.nix b/pkgs/development/ruby-modules/bundix/default.nix
index 378f148ca6a..8a1207269d2 100644
--- a/pkgs/development/ruby-modules/bundix/default.nix
+++ b/pkgs/development/ruby-modules/bundix/default.nix
@@ -1,32 +1,25 @@
-{ buildRubyGem, lib, bundler, ruby, nix, nix-prefetch-git }:
+{ lib, stdenv, fetchFromGitHub, nix, nix-prefetch-git, bundler, makeWrapper }:
+stdenv.mkDerivation rec {
+  version = "2.2.0";
+  name = "bundix-${version}";
 
-buildRubyGem rec {
-  inherit ruby;
-
-  name = "${gemName}-${version}";
-  gemName = "bundix";
-  version = "2.0.8";
-
-  sha256 = "0ikpf2g01izadjpdnc4k2rb9v4g11f1jk2y5alxc7n7rxjkwdc66";
-
-  buildInputs = [bundler];
-
-  postInstall = ''
-    substituteInPlace $GEM_HOME/gems/${gemName}-${version}/lib/bundix.rb \
-      --replace \
-        "'nix-instantiate'" \
-        "'${nix.out}/bin/nix-instantiate'" \
-      --replace \
-        "'nix-hash'" \
-        "'${nix.out}/bin/nix-hash'" \
-      --replace \
-        "'nix-prefetch-url'" \
-        "'${nix.out}/bin/nix-prefetch-url'" \
-      --replace \
-        "'nix-prefetch-git'" \
-        "'${nix-prefetch-git}/bin/nix-prefetch-git'"
+  src = fetchFromGitHub {
+    owner = "manveru";
+    repo = "bundix";
+    rev = version;
+    sha256 = "0lnzkwxprdz73axk54y5p5xkw56n3lra9v2dsvqjfw0ab66ld0iy";
+  };
+  phases = "installPhase";
+  installPhase = ''
+    mkdir -p $out
+    makeWrapper $src/bin/bundix $out/bin/bundix \
+      --prefix PATH : "${nix.out}/bin" \
+      --prefix PATH : "${nix-prefetch-git.out}/bin" \
+      --set GEM_PATH "${bundler}/${bundler.ruby.gemPath}"
   '';
 
+  nativeBuildInputs = [makeWrapper];
+
   meta = {
     inherit version;
     description = "Creates Nix packages from Gemfiles";