updated the changelog
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index d2774ca..50dab92 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -136,7 +136,7 @@
- Added unbuffered_row() method for getting a row without prefetching whole result (consume less memory).
- Libraries
-
+ - CI_Session now respects php.ini's session.gc_probability and session.gc_divisor
- Added max_filename_increment config setting for Upload library.
- CI_Loader::_ci_autoloader() is now a protected method.
- Added custom filename to Email::attach() as $this->email->attach($filename, $disposition, $newname).