diff --git a/CHANGES.md b/CHANGES.md
index 5902097d..2f11b4e6 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -3,7 +3,8 @@
 ## ?
 
 - Fix (Accessibility): Avoid duplicate IDs
-- Testing: Switch to Cypress with code coverage for UI testing
+- Testing: Switch to Cypress with code coverage for UI testing;
+  use ESM version for faster debugging
 - npm: Add peerDeps
 
 ## 5.1.0