diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index b5b31dc..ce84b7f 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -499,6 +499,7 @@
       -  ``UTF8_ENABLED`` now requires only one of `Multibyte String <http://php.net/mbstring>`_ or `iconv <http://php.net/iconv>`_ to be available instead of both.
       -  Changed method ``clean_string()`` to utilize ``mb_convert_encoding()`` if it is available but ``iconv()`` is not.
 
+   -  Added compatibility layers for PHP's `Multibyte string <http://php.net/mbstring>`_ (limited support) and `Password Hashing <http://php.net/password>` extensions.
    -  Removed ``CI_CORE`` boolean constant from *CodeIgniter.php* (no longer Reactor and Core versions).
    -  Log Library will now try to create the **log_path** directory if it doesn't exist.
    -  Added support for HTTP-Only cookies with new config option *cookie_httponly* (default FALSE).