diff --git a/pkgs/tools/misc/pws/default.nix b/pkgs/tools/misc/pws/default.nix
index ac4f4524b99..7294c61da8f 100644
--- a/pkgs/tools/misc/pws/default.nix
+++ b/pkgs/tools/misc/pws/default.nix
@@ -8,9 +8,7 @@ stdenv.mkDerivation rec {
 
     inherit ruby;
 
-    gemfile  = ./Gemfile;
-    lockfile = ./Gemfile.lock;
-    gemset   = ./gemset.nix;
+    gemdir = ./.;
   };
 
   buildInputs = [ makeWrapper ];