[ci skip] Add changelog entry for #4987
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index b2d0034..2769990 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -17,6 +17,7 @@
 -  Fixed a regression (#4975) - :doc:`Loader Library <libraries/loader>` couldn't handle objects passed as view variables.
 -  Fixed a bug (#4977) - :doc:`Loader Library <libraries/loader>` method ``helper()`` could accept any character as a filename extension separator.
 -  Fixed a regression where the :doc:`Session Library <libraries/sessions>` would fail on a ``session_regenerate_id(TRUE)`` call with the 'database' driver.
+-  Fixed a bug (#4987) - :doc:`Query Builder <database/query_builder>` caching didn't keep track of table aliases.
 
 Version 3.1.3
 =============