diff --git a/site/_docs/upgrading/2-to-3.md b/site/_docs/upgrading/2-to-3.md
index 8bbadd99..cdc69fd0 100644
--- a/site/_docs/upgrading/2-to-3.md
+++ b/site/_docs/upgrading/2-to-3.md
@@ -64,8 +64,8 @@ then the layout can access that via `{% raw %}{{ layout.class }}{% endraw %}`.
 ### Syntax highlighter changed
 
 For the first time, the default syntax highlighter has changed for the
-`highlight` tag and for backtick code blocks. Instead of [Pygments.rb][],
-it's now [Rouge][]. If you were using the `highlight` tag with certain
+`highlight` tag and for backtick code blocks. Instead of [Pygments.rb](https://github.com/tmm1/pygments.rb),
+it's now [Rouge](http://rouge.jneen.net/). If you were using the `highlight` tag with certain
 options, such as `hl_lines`, they may not be available when using Rouge. To
 go back to using Pygments, set `highlighter: pygments` in your
 `_config.yml` file and run `gem install pygments.rb` or add