Update user_guide_src/source/changelog.rst
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 59d2ea8..b2f2475 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -61,6 +61,8 @@
if they are set manually after initialization.
- Minor speed optimizations and method & property visibility declarations in the Calendar Library.
- Removed SHA1 function in the :doc:`Encryption Library <libraries/encryption>`.
+ - Added $config['csrf_regeneration'] to the CSRF protection in the :doc:`Security library <libraries/security>`, which makes token regeneration optional.
+
- Core