diff --git a/index.html b/index.html
index 99cf945..0b53d22 100644
--- a/index.html
+++ b/index.html
@@ -24,6 +24,9 @@ Welcome.
     <li><a href="religion.html">Religion
       </a>
     </li>
+    <li><a href="dvcs.html">Software
+      </a>
+    </li>
     <li><a href="activity.html">Online activity elsewhere
       </a>
     </li>