Fix #1859
diff --git a/release-notes/VERSION-2.x b/release-notes/VERSION-2.x
index dccf1f4..82c46ff 100644
--- a/release-notes/VERSION-2.x
+++ b/release-notes/VERSION-2.x
@@ -10,6 +10,8 @@
#1854: NPE deserializing collection with `@JsonCreator` and `ACCEPT_CASE_INSENSITIVE_PROPERTIES`
(reported by rue-jw@github)
#1855: Blacklist for more serialization gadgets (dbcp/tomcat, spring)
+#1859: Issue handling unknown/unmapped Enum keys
+ (reported by remya11@github)
#1868: Class name handling for JDK unmodifiable Collection types changed
(reported by Rob W)
#1870: Remove `final` on inherited methods in `BuilderBasedDeserializer` to allow