diff --git a/docs/releases/2.1.15.txt b/docs/releases/2.1.15.txt
index 9cd6457985..8d13bb281f 100644
--- a/docs/releases/2.1.15.txt
+++ b/docs/releases/2.1.15.txt
@@ -9,4 +9,8 @@ Django 2.1.15 fixes a data loss bug in 2.1.14.
 Bugfixes
 ========
 
-* ...
+* Fixed a data loss possibility in the
+  :meth:`~django.db.models.query.QuerySet.select_for_update()`. When using
+  ``'self'`` in the ``of`` argument with :ref:`multi-table inheritance
+  <multi-table-inheritance>`, a parent model was locked instead of the
+  queryset's model (:ticket:`30953`).