diff --git a/CHANGELOG b/CHANGELOG
index f54ccfd..3a3ba8f 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,10 @@
 # All notable changes to this project will be documented in this file.
 # This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [0.16.4] Unreleased
+### Changed
+- Adjust blank lines on formatting boundaries when using the `--lines` option.
+
 ## [0.16.3] 2017-07-13
 ### Changed
 - Add filename information to a ParseError excetion.