[ci skip] Add changelog entry for PR #5391
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 9b7f014..63de806 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -7,6 +7,10 @@
Release Date: Not Released
+- **Security**
+
+ - Updated :doc:`URL Helper <helpers/url_helper>` function :php:func:`auto_link()` to add ``rel="noopener"`` to generated links in order to prevent tab hijacking.
+
- General Changes
- Updated :doc:`Email Library <libraries/email>` to always negotiate between TLS 1.0, 1.1, 1.2 when possible (PHP 5.6+) for SMTP connections.