diff --git a/CHANGES.txt b/CHANGES.txt
index 2d045b4..71ae4c2 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,6 +1,11 @@
 Changelog
 =========
 
+2.13.2 (unreleased)
+-------------------
+
+- TBD
+
 2.13.1 (2010-06-16)
 -------------------
 
diff --git a/setup.py b/setup.py
index 5754040..eafcb2f 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@
 from setuptools import setup, find_packages, Extension
 
 setup(name='Missing',
-      version = '2.13.1',
+      version = '2.13.2.dev0',
       url='http://pypi.python.org/pypi/Missing',
       license='ZPL 2.1',
       description="Special Missing objects used in Zope2.",