diff --git a/COPYRIGHT b/COPYRIGHT
index 922173fd7..0fc441006 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -26,4 +26,12 @@ Doctrine contains a port of the Spyc software
 
 Url:       http://spyc.sourceforge.net/
 Copyright: 2005-2006 Chris Wanstrath
-License:   MIT - http://www.opensource.org/licenses/mit-license.php
\ No newline at end of file
+License:   MIT - http://www.opensource.org/licenses/mit-license.php
+
+Zend Framework
+--------------
+
+Doctrine contains ports of a few Zend components and has borrowed concepts and ideas from the Zend Framework project.
+
+Url:       http://framework.zend.com
+Copyright: Copyright © 2006-2007 by Zend Technologies, All rights reserved.
\ No newline at end of file