diff --git a/doc/todo/integrate_shell-monad.mdwn b/doc/todo/integrate_shell-monad.mdwn
index 0fa3da0..0b2ea4f 100644
--- a/doc/todo/integrate_shell-monad.mdwn
+++ b/doc/todo/integrate_shell-monad.mdwn
@@ -6,3 +6,6 @@ into sudo.
 The current code for this is just all strings and easy to make mistakes in.
 It would be good to integrate <http://hackage.haskell.org/package/shell-monad>
 (or a similar library) as a way to generate shell code. --[[Joey]]
+
+<http://hackage.haskell.org/package/turtle> might be another good option
+--[[Joey]]