diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9ee854ff4f..11fab90a83 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,10 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+### Changed
+
+- Change default `idle` behaviour to be `NOP` instead of `WFI`
+
 ## [v0.6.0-rc.4] - 2021-11-09
 
 - Updated to use the new generic `Monotonic` trait