diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 9cae52f..bad3d08 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -103,6 +103,7 @@
 	<li>Fixed a bug in the Email library with quoted-printable encoding improperly encoding space and tab characters.</li>
 	<li>Modified XSS sanitization to no longer add semicolons after &amp;[single letter], such as in M&amp;M's, B&amp;B, etc.</li>
 	<li>Modified XSS sanitization to no longer strip XHTML image tags of closing slashes.</li>
+	<li>Fixed a bug in the Session class when database sessions are used where upon session update all userdata would be errantly written to the session cookie.</li>
 </ul>
 
 <h2>Version 1.6.3</h2>