diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5c26ef6e77..91a23d61fa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## [Unreleased]
 
 ### Breaking Changes
+- Added isLabelsObserved to LabelledGauge in plugin-api. Implementing classes will need to also implement this method
 
 ### Upcoming Breaking Changes