diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 991bde6..df0bff7 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -4,6 +4,7 @@
 
 ### Features
 
+- Notification message: support Trigger requirements (PR #6 by @chicco785)
 - Add protocol buffer to describe faults (PR #3 by @chicco785)
 
 ### Refactoring