prep for 1.7.2 release
diff --git a/user_guide/installation/upgrading.html b/user_guide/installation/upgrading.html
index 4befa35..907917e 100644
--- a/user_guide/installation/upgrading.html
+++ b/user_guide/installation/upgrading.html
@@ -28,7 +28,7 @@
<div id="masthead">
<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
<tr>
-<td><h1>CodeIgniter User Guide Version 1.7.1</h1></td>
+<td><h1>CodeIgniter User Guide Version 1.7.2</h1></td>
<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
</tr>
</table>
@@ -60,6 +60,7 @@
<p>Please read the upgrade notes corresponding to the version you are upgrading from.</p>
<ul>
+<li><a href="upgrade_172.html">Upgrading from 1.7.1 to 1.7.2</a></li>
<li><a href="upgrade_171.html">Upgrading from 1.7.0 to 1.7.1</a></li>
<li><a href="upgrade_170.html">Upgrading from 1.6.3 to 1.7.0</a></li>
<li><a href="upgrade_163.html">Upgrading from 1.6.2 to 1.6.3</a></li>