diff --git a/docs/index.rst b/docs/index.rst
index 816fe4e..19f08c8 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -103,10 +103,14 @@ Changelog
 Unreleased
 ''''''''''
 
+- R128 gain tags are now stored in Q7.8 integer format, as per
+  `the relevant standard`_.
 - Added an ``mb_workid`` flag.
 - The Python source distribution now includes an ``__init__.py`` file that
   makes it easier to run the tests.
 
+.. _the relevant standard: https://tools.ietf.org/html/rfc7845.html#page-25
+
 v0.1.0
 ''''''