diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a561786..8e39a4b7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+- Add binary types to `ConstValue` and `Value`. [#569](https://github.com/async-graphql/async-graphql/issues/569)
+
 ## [2.9.8] 2021-07-12
 
 - Add Extensions in Error of `InputValueValidator`. [#564](https://github.com/async-graphql/async-graphql/pull/564)