diff --git a/docs/changelog.rst b/docs/changelog.rst
index c2ec1d348..76efad2bb 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -61,6 +61,9 @@ For plugin developers
 - Colorisation, diff and layout utility helpers previously imported from
   :mod:`beets.ui` now live in :mod:`beets.util.color`, :mod:`beets.util.diff`,
   and :mod:`beets.util.layout`. Update external imports accordingly.
+- The ``tunelog`` logging helper that was exclusively available to the lastgenre
+  plugin is now usable througout beets and was renamed to ``extra_debug``.
+  Import it from the ``beets.logging`` module to use it.
 
 Other changes
 ~~~~~~~~~~~~~