Updated changelog
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 4e55182..a5f5605 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -487,6 +487,7 @@
- Fixed a bug (#73) - :doc:`Security Library <libraries/security>` method ``sanitize_filename()`` could be tricked by an XSS attack.
- Fixed a bug (#2211) - :doc:`Migration Library <libraries/migration>` extensions couldn't execute ``CI_Migration::__construct()``.
- Fixed a bug (#2255) where ``smtp_timeout`` was not being applied to read and writes for the socket.
+- Fixed a bug (#2239) of missing subject when using ``bcc_batch_mode``.
Version 2.1.3
=============