diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7bb28f110..d7b9c0960 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -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/).
 
+## [Unreleased]
+### Added
+- `extendData` prop for `Graph` component. This feeds `Plotly.extendTraces` for incremental data updates. [#461](https://github.com/plotly/dash-core-components/pull/461)
+
 ## [0.45.0] - 2019-03-25
 ### Added
 - `restyleData` prop for `Graph` component [#483](https://github.com/plotly/dash-core-components/pull/483)