diff --git a/index.html b/index.html
index 4dfb3f4..c5048e6 100644
--- a/index.html
+++ b/index.html
@@ -71,6 +71,7 @@
         <li><a href="https://css-tricks.com/snippets/css/a-guide-to-flexbox/">complete flexbox</a></li>
         <li><a href="https://github.com/philipwalton/flexbugs">flex bugs</a></li>
         <li><a href="http://app.fontastic.me/">fontastic</a></li>
+        <li><a href="https://github.com/AllThingsSmitty/css-protips">CSS Protips</a></li>
       </ul>
 
       <ul>