diff --git a/changelog.md b/changelog.md
index c502ded..121406c 100644
--- a/changelog.md
+++ b/changelog.md
@@ -5,6 +5,12 @@ 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]
+
+### Changed
+
+- Update to plugin-core version 0.21.0.
+
 ## [0.2.4] - 2023/08/30
 
 ### Changed