diff --git a/doc/src/conf.py b/doc/src/conf.py
index 49100cf..f774765 100644
--- a/doc/src/conf.py
+++ b/doc/src/conf.py
@@ -33,7 +33,7 @@ master_doc = 'index'
 
 # General substitutions.
 project = 'cx_Oracle'
-copyright = '2016, 2017 Oracle and/or its affiliates.  All rights reserved.'
+copyright = '2016, 2017, Oracle and/or its affiliates. All rights reserved. Portions Copyright © 2007-2015, Anthony Tuininga. All rights reserved. Portions Copyright © 2001-2007, Computronix (Canada) Ltd., Edmonton, Alberta, Canada. All rights reserved'
 author = 'Oracle'
 
 # The default replacements for |version| and |release|, also used in various