diff -r adcd9131b7c6 Doc/library/pickle.rst
--- a/Doc/library/pickle.rst	Fri Dec 09 00:41:46 2016 +0100
+++ b/Doc/library/pickle.rst	Fri Dec 09 10:59:38 2016 +0530
@@ -145,6 +145,9 @@
   brought by protocol 4.
 
 .. note::
+   You can set Protocol to -1 to pickle using the highest protocol available.
+
+.. note::
    Serialization is a more primitive notion than persistence; although
    :mod:`pickle` reads and writes file objects, it does not handle the issue of
    naming persistent objects, nor the (even more complicated) issue of concurrent