diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 5507a81..da95fcd 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -10,7 +10,8 @@
 
 ## New Features
 
-- Add input validation checks for `price`, `quantity`, `delivery_period`, `valid_until` and `execution_option`.
+- Add input validation checks for `price`, `quantity`, `delivery_period`, `valid_until`, `execution_option` and `order_type`.
+- Add unit tests for requests with invalid input parameters.
 - Updated dependencies to latest versions
 
 ## Bug Fixes