diff --git a/NEWS.md b/NEWS.md
index b2f6be0..ef46bef 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -2,6 +2,7 @@
 ================
 
 * option to add default values during validation
+* add thread-safe API
 * build static library by default (jsoncpp only builds static library by default)