diff --git a/pkgs/development/ruby-modules/gem-config/default.nix b/pkgs/development/ruby-modules/gem-config/default.nix
index eb9be9ed18c..8640d43775d 100644
--- a/pkgs/development/ruby-modules/gem-config/default.nix
+++ b/pkgs/development/ruby-modules/gem-config/default.nix
@@ -319,6 +319,10 @@ in
     dontUseCmakeConfigure = true;
   };
 
+  sassc = attrs: {
+    nativeBuildInputs = [ rake ];
+  };
+
   scrypt = attrs:
     if stdenv.isDarwin then {
       dontBuild = false;