[ci skip] Add changelog entry for #4762
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index e95d509..64ea521 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -18,6 +18,7 @@
- Fixed a regression (#4739) - :doc:`Email Library <libraries/email>` doesn't properly separate attachment bodies from headers.
- Fixed a bug (#4754) - :doc:`Unit Testing Library <libraries/unit_testing>` method ``result()`` didn't translate ``res_datatype``.
- Fixed a bug (#4759) - :doc:`Form Validation <libraries/form_validation>`, :doc:`Trackback <libraries/trackback>` and `XML-RPC <libraries/xmlrpc>` libraries treated URI schemes in a case-sensitive manner.
+- Fixed a bug (#4762) - :doc:`Cache Library <libraries/caching>` 'file' driver method ``get_metadata()`` checked TTL time against ``mtime`` instead of the cache item's creation time.
Version 3.1.0
=============