Let configparser use ordered dicts by default.
diff --git a/Doc/library/configparser.rst b/Doc/library/configparser.rst
index e833e23..9439d0d 100644
--- a/Doc/library/configparser.rst
+++ b/Doc/library/configparser.rst
@@ -64,6 +64,9 @@
    options within a section, and for the default values. This class does not
    support the magical interpolation behavior.
 
+   .. versionchanged 3.1
+      The default *dict_type* is :class:`collections.OrderedDict`.
+
 
 .. class:: ConfigParser([defaults[, dict_type]])
 
@@ -80,6 +83,9 @@
    option names to lower case), the values ``foo %(bar)s`` and ``foo %(BAR)s`` are
    equivalent.
 
+   .. versionchanged 3.1
+      The default *dict_type* is :class:`collections.OrderedDict`.
+
 
 .. class:: SafeConfigParser([defaults[, dict_type]])
 
@@ -90,6 +96,9 @@
 
    .. XXX Need to explain what's safer/more predictable about it.
 
+   .. versionchanged 3.1
+      The default *dict_type* is :class:`collections.OrderedDict`.
+
 
 .. exception:: NoSectionError