diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 619fa46..c316da8 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -26,6 +26,7 @@
 -  Fixed a bug (#5279) - :doc:`Query Builder <database/query_builder>` didn't account for already escaped identifiers while applying database name prefixes.
 -  Fixed a bug (#5331) - :doc:`URL Helper <helpers/url_helper>` function :php:func:`auto_link()` converted e-mail addresses starting with 'www.' to both "url" and "email" links.
 -  Fixed a bug where ``$config['allow_get_array']`` defaulted to ``FALSE`` if it didn't exist in the config file.
+-  Fixed a bug (#5379) - :doc:`Session Library <libraries/sessions>` would incorrectly fail to obtain a lock that it already has on PHP 7 with the 'memcached' driver.
 
 Version 3.1.6
 =============