diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 5149f2a7d..1006ef531 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -4,7 +4,7 @@ Bug fixes, feature additions, tests, documentation and more can be contributed v
 
 ## Bug fixes, feature additions, etc.
 
-Please send a pull request to the master branch. Please include documentation and [tests](Tests/README.rst) for new features. Tests or documentation without bug fixes or feature additions are also welcome. Feel free to ask questions as an [issue](https://github.com/python-pillow/Pillow/issues/new) or on IRC (irc.freenode.net, #pil)
+Please send a pull request to the master branch. Please include [documentation](http://pillow.readthedocs.org) and [tests](Tests/README.rst) for new features. Tests or documentation without bug fixes or feature additions are also welcome. Feel free to ask questions as an [issue](https://github.com/python-pillow/Pillow/issues/new) or on IRC (irc.freenode.net, #pil)
 
 - Fork the Pillow repository.
 - Create a branch from master.