diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 0740972..7d06f79 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -152,6 +152,7 @@
 	<li>Fixed an array to string conversion error in the Validation library (#4425)</li>
 	<li>Fixed a bug (#4506) with overlay_watermark() in the Image library preventing support for PNG-24s with alpha transparency</li>
 	<li>Fixed a bug (#4153) in the XML-RPC class preventing dateTime.iso8601 from being used.</li>
+	<li>Fixed bug (#4451, #4299, #4339) where failed transactions will not rollback when debug mode is enabled.</li>
 	</ul>
 
 <h2>Version 1.6.1</h2>