diff --git a/theme-setup.md b/theme-setup.md
index 89a0cc2..2561f65 100644
--- a/theme-setup.md
+++ b/theme-setup.md
@@ -15,11 +15,12 @@ General notes and suggestions for customizing **So Simple Theme**.
 ## Basic Setup for a new Jekyll site
 
 1. [Install Jekyll](http://jekyllrb.com) and read through the documentation if you haven't already.
-2. Fork the [So Simple Theme repo](https://github.com/mmistakes/so-simple-theme/fork)
-3. Clone the repo you just forked.
-4. Edit `_config.yml` to personalize your site.
-5. Check out the sample posts in `_posts` to see examples for pulling in large feature images, assigning categories and tags, and other YAML data.
-6. Read the documentation below for further customization pointers and documentation.
+2. [Install Jekyll Extra - Kramdown](http://jekyllrb.com/docs/extras/#kramdown)
+3. Fork the [So Simple Theme repo](https://github.com/mmistakes/so-simple-theme/fork)
+4. Clone the repo you just forked.
+5. Edit `_config.yml` to personalize your site.
+6. Check out the sample posts in `_posts` to see examples for pulling in large feature images, assigning categories and tags, and other YAML data.
+7. Read the documentation below for further customization pointers and documentation.
 
 <div markdown="0"><a href="https://github.com/mmistakes/so-simple-theme" class="btn">Download the Theme</a></div>