diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index d77ed08..4cb6266 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -101,6 +101,7 @@
 			<li>Added <a href="./general/styleguide.html">PHP Style Guide</a> to docs.</li>
 			<li>Added backticks around column names in MySQL when using insert_string and update_string functions, and in <kbd>where()</kbd> function.</li>
 			<li>Modified Pagination library to only output the "First" link when the link for page one would not be shown.</li>
+			<li>Added a file lock check during caching, before trying to write to the file.</li>
 		</ul>
 	</li>
 </ul>