diff --git a/support/Release notes.txt b/support/Release notes.txt
index 8f69e684..afc1e334 100644
--- a/support/Release notes.txt	
+++ b/support/Release notes.txt	
@@ -14,6 +14,7 @@ Added assert.h include to memory.h
 ===============================================================================
 14.37.1
 Fix to the return value of alternate STL 'copy'
+Added delegate option to callback_timer
 
 ===============================================================================
 14.37.0