Link to PEP
diff --git a/Doc/whatsnew/2.7.rst b/Doc/whatsnew/2.7.rst
index 856354a..f611e05 100644
--- a/Doc/whatsnew/2.7.rst
+++ b/Doc/whatsnew/2.7.rst
@@ -171,6 +171,11 @@
an *object_pairs_hook* to allow OrderedDicts to be built by the decoder.
Support was also added for third-party tools like `PyYAML <http://pyyaml.org/>`_.
+.. seealso::
+
+ :pep:`372` - Adding an ordered dictionary to collections
+ PEP written by Armin Ronacher and Raymond Hettinger;
+ implemented by Raymond Hettinger.
.. _pep-0378: