diff --git a/release-notes/VERSION b/release-notes/VERSION
index 1ba5ed9..39031db 100644
--- a/release-notes/VERSION
+++ b/release-notes/VERSION
@@ -7,6 +7,8 @@
 2.5.1 (not yet released)
 
 #667: Problem with bogus conflict between single-arg-String vs `CharSequence` constructor
+#6659: JSOG usage of @JsonTypeInfo and @JsonIdentityInfo(generator=JSOGGenerator.class) fails
+ (reported by ericali78@github)
 #671: Adding `java.util.Currency` deserialization support for maps
  (contributed by Alexandre S-C)