diff --git a/docs/changelog.rst b/docs/changelog.rst
index bc01a403..b308c5fb 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -17,6 +17,7 @@ Development
     - If you catch/use ``MongoEngineConnectionError`` in your code, you'll have to rename it.
 - BREAKING CHANGE: Positional arguments when instantiating a document are no longer supported. #2103
     - From now on keyword arguments (e.g. ``Doc(field_name=value)``) are required.
+- BREAKING CHANGE: A ``LazyReferenceField`` is now stored in the ``_data`` field of its parent as a ``DBRef``, ``Document``, or ``EmbeddedDocument`` (``ObjectId`` is no longer allowed). #2182
 - DEPRECATION: ``Q.empty`` & ``QNode.empty`` are marked as deprecated and will be removed in a next version of MongoEngine. #2210
     - Added ability to check if Q or QNode are empty by parsing them to bool.
     - Instead of ``Q(name="John").empty`` use ``not Q(name="John")``.