diff --git a/CHANGELOG.md b/CHANGELOG.md
index a14fd3a..a45300f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Changed
+ - IcdTimer - fixed issue that prevented OnElapsed event from firing when Length is less than (or close to) Heartbeat Interval
 
 ## [8.8.0] - 2020-01-23
 ### Added