diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0b707a853..c86c10005 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ All notable changes to [diagram-js](https://github.com/bpmn-io/diagram-js) are d
 
 _**Note:** Yet to be released changes appear here._
 
+* `FIX`: ensure cloned marker IDs are unique ([#909](https://github.com/bpmn-io/diagram-js/pull/909))
+
 ## 14.7.0
 
 * `FEAT`: support nested `defs` in the SVG ([#906](https://github.com/bpmn-io/diagram-js/pull/906))