diff --git a/docs/changelog.rst b/docs/changelog.rst
index dbc64e7d..87729df3 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -4,10 +4,9 @@ Changelog
 
 Development
 ===========
-- Add support for MongoDB 3.6 and Python3.7 in travis
+- Add support for MongoDB 3.6 in travis
 - BREAKING CHANGE: Changed the custom field validator (i.e `validation` parameter of Field) so that it now requires:
     the callable to raise a ValidationError (i.o return True/False).
-- Prevent an expensive call to to_mongo in Document.save() to improve performance #?
 - Improve perf of .save by avoiding a call to to_mongo in Document.save() #2049
 - Fix querying on List(EmbeddedDocument) subclasses fields #1961 #1492
 - Fix querying on (Generic)EmbeddedDocument subclasses fields #475