diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 272db5f..7a5fcf2 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -66,6 +66,11 @@
 			<li>Fixed support for docx, xlsx files in mimes.php.</li>
 		</ul>
 	</li>
+	<li>Libraries
+		<ul>
+			<li>Further improved MIME type detection in the <a href="libraries/file_uploading.html">File Uploading Library</a>.</li>
+		</ul>
+	</li>
 </ul>
 
 <h3>Bug fixes for 2.1.1</h3>