diff --git a/README.md b/README.md
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@@ -56,6 +56,7 @@ This should be updated fairly regularly. As usual, **pull requests are encourage
 ### Writing about Docs (again, in no particular order)
 
 * [Designing Great API Docs](http://blog.parse.com/2012/01/11/designing-great-api-docs/) - Blog post by [@jamesyu](https://twitter.com/jamesjyu) about what he/Parse finds essential in API Docs. (contributed by [@hobbyist](https://twitter.com/https://twitter.com/#!/hobbyist))
+* [TomDoc](http://tomdoc.org/) - A specification for Ruby library API docs by [@mojombo](https://twitter.com/mojombo)
 
 ### Generating Docs