diff --git a/readme.md b/readme.md
index 99963c2..0105227 100644
--- a/readme.md
+++ b/readme.md
@@ -276,6 +276,7 @@
 - [jsdox](https://github.com/sutoiku/jsdox) - JSDoc3 to Markdown documentation generator.
 - [apiDoc](https://github.com/apidoc/apidoc) - Inline documentation for RESTful web APIs.
 - [documentation.js](http://documentation.js.org) - API documentation generator with support for ES2015+ and flow annotation.
+- [YUIDoc](http://yui.github.com/yuidoc/) - Generates API documentation from comments in source.
 
 
 ### Filesystem