diff --git a/NOTICE b/NOTICE
index 84ecb14d9..02fe5929d 100644
--- a/NOTICE
+++ b/NOTICE
@@ -1,5 +1,6 @@
 Apache Mynewt NimBLE
 Copyright 2015-2020 The Apache Software Foundation
+Modifications Copyright 2017-2020 Espressif Systems (Shanghai) CO., LTD.
 
 This product includes software developed at
 The Apache Software Foundation (http://www.apache.org/).