diff --git a/NOTICE.txt b/NOTICE.txt
index 81f986289d..1770f2d48b 100644
--- a/NOTICE.txt
+++ b/NOTICE.txt
@@ -5,3 +5,10 @@ This product includes software developed by The Apache Software
 Foundation (http://www.apache.org/).
 
 Developers and Contributors are listed in the project POM file
+
+JSON support is provided by Flexjson (http://flexjson.sf.net).
+Copyright 2007 Charlie Hubbard.
+
+This product makes use of the google-collections library from
+http://code.google.com/p/google-collections/.
+Copyright (C) 2008 Google Inc.