diff --git a/release-notes/VERSION-2.x b/release-notes/VERSION-2.x
index ccc2c9b2..5c67f1e6 100644
--- a/release-notes/VERSION-2.x
+++ b/release-notes/VERSION-2.x
@@ -27,6 +27,7 @@ Modules:
 - (datetime) Add explicit `ZoneId` serializer to force use of `ZoneId` as Type Id, and
   not inaccessible subtype (`ZoneRegion`): this to avoid JDK9+ Module Access problem
 
+2.10.4 (03-May-2020)
 2.10.3 (03-Mar-2020)
 2.10.2 (05-Jan-2020)