diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index e49b35844..4de4f2213 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,9 +1,11 @@
 ## Validator Changes
 
-* no changes
+* Improved Error messages when code is not in value set
 
 ## Other code changes
 
 * Move HTTP logging to a sub-directory of temp
 * Default to text log not HTML log for terminology logging, and don't spuriously escape the text log
 * Use JSON not XML by default when using R4 terminology service
+* Add support for R6 final version
+* Bump HAPI to 6.4.1