update releae notes wrt #552
diff --git a/release-notes/VERSION b/release-notes/VERSION
index 545e9cd..d3729e1 100644
--- a/release-notes/VERSION
+++ b/release-notes/VERSION
@@ -3,12 +3,14 @@
 
 #521: Keep bundle annotations, prevent problems with recursive annotation
    types
-  (reported by tea-dragon@github)
+ (reported by tea-dragon@github)
 #539: Problem with post-procesing of "empty bean" serializer; was not calling
   'BeanSerializerModifier.modifySerializer()` for empty beans
  (reported by Fabien R, fabienrenaud@github)
 #543: Problem resolving self-referential recursive types
-  (reported by ahgittin@github)
+ (reported by ahgittin@github)
+#552: Improved handling for ISO-8601 (date) format
+ (contributed by Jerome G, geronimo-iia@github)
 
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