diff --git a/default.nix b/default.nix
index d55d4d7..0b4fb14 100644
--- a/default.nix
+++ b/default.nix
@@ -4,6 +4,7 @@ with import <nixpkgs> {}; {
     buildInputs = [
       busybox
       bash dash mksh zsh
+      python ruby
     ];
   };  
 }