diff --git a/packages/polaris-viz/CHANGELOG.md b/packages/polaris-viz/CHANGELOG.md
index 2573f4026..e094700a7 100644
--- a/packages/polaris-viz/CHANGELOG.md
+++ b/packages/polaris-viz/CHANGELOG.md
@@ -5,7 +5,9 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-<!-- ## Unreleased -->
+## Unreleased
+
+- Added experimental feature to define a `fillValue` for a `DataSeries` which Polaris Viz will use to backfill missing data points
 
 ## [10.0.1] - 2023-11-16