Fix #1441
diff --git a/release-notes/VERSION b/release-notes/VERSION
index ff258a0..2d60984 100644
--- a/release-notes/VERSION
+++ b/release-notes/VERSION
@@ -12,6 +12,8 @@
 #1432: Off by 1 bug in PropertyValueBuffer
  (reported by Kevin D)
 #1439: NPE when using with filter id, serializing `java.util.Map` types
+#1441: Failure with custom Enum key deserializer, polymorphic types
+ (reported by Nathanial O)
 - Improvements to #1411 fix to ensure consistent `null` key handling
 
 2.8.4 (14-Oct-2016)