diff --git a/RELEASE_NOTES b/RELEASE_NOTES
index dfc9566..a510869 100644
--- a/RELEASE_NOTES
+++ b/RELEASE_NOTES
@@ -3,7 +3,7 @@
 
 - Added security header feature
 - Introduced the smtp acl list, and obsoleted the tcp_wrappers check
-
+- Switched from Blowfish encryption to AES-256
 
 1.3.9:
 ------