Fix #1844
diff --git a/release-notes/VERSION b/release-notes/VERSION
index 7195494..1a3fb18 100644
--- a/release-notes/VERSION
+++ b/release-notes/VERSION
@@ -19,6 +19,8 @@
  (reported by ZeleniJure@github)
 #1843: Include name of unsettable property in exception from `SetterlessProperty.set()`
  (suggested by andreh7@github)
+#1844: Map "deep" merge only adds new items, but not override existing values
+ (reported by alinakovalenko@github)
 
 2.9.2 (14-Oct-2017)