diff --git a/NOTICE b/NOTICE
index f583e47a..4d6f21c3 100644
--- a/NOTICE
+++ b/NOTICE
@@ -52,3 +52,86 @@ CA Bundle License
 This Source Code Form is subject to the terms of the Mozilla Public
 License, v. 2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+Idna License
+============
+
+Copyright (c) 2013-2016, Kim Davies. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+#. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+#. Redistributions in binary form must reproduce the above
+   copyright notice, this list of conditions and the following
+   disclaimer in the documentation and/or other materials provided with
+   the distribution.
+
+#. Neither the name of the copyright holder nor the names of the 
+   contributors may be used to endorse or promote products derived 
+   from this software without specific prior written permission.
+
+#. THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS "AS IS" AND ANY
+   EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR 
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+   USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+   DAMAGE.
+
+Portions of the codec implementation and unit tests are derived from the
+Python standard library, which carries the `Python Software Foundation
+License <https://docs.python.org/2/license.html>`_:
+
+   Copyright (c) 2001-2014 Python Software Foundation; All Rights Reserved
+
+Portions of the unit tests are derived from the Unicode standard, which 
+is subject to the Unicode, Inc. License Agreement:
+
+   Copyright (c) 1991-2014 Unicode, Inc. All rights reserved.
+   Distributed under the Terms of Use in 
+   <http://www.unicode.org/copyright.html>.
+
+   Permission is hereby granted, free of charge, to any person obtaining
+   a copy of the Unicode data files and any associated documentation
+   (the "Data Files") or Unicode software and any associated documentation
+   (the "Software") to deal in the Data Files or Software
+   without restriction, including without limitation the rights to use,
+   copy, modify, merge, publish, distribute, and/or sell copies of
+   the Data Files or Software, and to permit persons to whom the Data Files
+   or Software are furnished to do so, provided that
+   
+   (a) this copyright and permission notice appear with all copies 
+   of the Data Files or Software,
+
+   (b) this copyright and permission notice appear in associated 
+   documentation, and
+
+   (c) there is clear notice in each modified Data File or in the Software
+   as well as in the documentation associated with the Data File(s) or
+   Software that the data or software has been modified.
+
+   THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF
+   ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+   WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+   NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+   IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS
+   NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL
+   DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+   DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+   TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+   PERFORMANCE OF THE DATA FILES OR SOFTWARE.
+
+   Except as contained in this notice, the name of a copyright holder
+   shall not be used in advertising or otherwise to promote the sale,
+   use or other dealings in these Data Files or Software without prior
+   written authorization of the copyright holder.
+