diff --git a/index.html b/index.html
index b0398f38a..0aa493ced 100644
--- a/index.html
+++ b/index.html
@@ -1108,7 +1108,7 @@ <h2 class="frontpage-header">Calendar</h2>
 </td>
 <td>
 <ul class="list-inline">
-  
+  <li><a href="https://www.composingprograms.com/pages/29-recursive-objects.html" class="label label-outline" target="_blank">Ch. 2.9</a></li>
 </ul>
 </td>
 <td>
@@ -1542,7 +1542,7 @@ <h3><a href="/articles/about">Policies</a></h3>
 
  });
 
- let build_time = new Date(1000 * 1729294097.155317);
+ let build_time = new Date(1000 * 1729294199.14417);
  </script>
  <script>
   $('.alwaystoggle').css('display', 'inline-block');