diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index fb6e449..5f02761 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -82,6 +82,7 @@
 	<li>Database
 		<ul>
 			<li>Added a <a href="http://www.cubrid.org/" target="_blank">CUBRID</a> driver to the <a href="database/index.html">Database Driver</a>. Thanks to the CUBRID team for supplying this patch.</li>
+			<li>Added a PDO driver to the <a href="database/index.html">Database Driver</a>.</li>
 			<li>Typecast limit and offset in the <a href="database/queries.html">Database Driver</a> to integers to avoid possible injection.</li>
 			<li>
 				Added additional option 'none' for the optional third argument for  <kbd>$this->db->like()</kbd> in the <a href="database/active_record.html">Database Driver</a>.