Implement #550
diff --git a/release-notes/VERSION b/release-notes/VERSION
index d3729e1..77c1849 100644
--- a/release-notes/VERSION
+++ b/release-notes/VERSION
@@ -9,6 +9,7 @@
  (reported by Fabien R, fabienrenaud@github)
 #543: Problem resolving self-referential recursive types
  (reported by ahgittin@github)
+#550: Minor optimization: prune introspection of "well-known" JDK types
 #552: Improved handling for ISO-8601 (date) format
  (contributed by Jerome G, geronimo-iia@github)