diff --git a/docs/changelog.rst b/docs/changelog.rst
index 8d95b7fb0..3dd225864 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -11,6 +11,10 @@ Bug fixes:
 * :doc:`/plugins/lyrics`: Fix Genius search by using query params instead of body.
 * :doc:`/plugins/unimported`: The new ``ignore_subdirectories`` configuration
   option added in 1.6.0 now has a default value if it hasn't been set.
+* :doc:`/plugins/replaygain`: The type of the internal ``r128_track_gain`` and
+  ``r128_album_gain`` fields was changed from integer to float to fix loss of
+  precision due to truncation.
+  :bug:`4169`
 
 For packagers: