diff --git a/CHANGES.txt b/CHANGES.txt
index 6c635b7..92d42c4 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,6 +1,10 @@
 Changelog
 =========
 
+2.13.3 (unreleased)
+-------------------
+
+
 2.13.2 (2011-12-12)
 -------------------
 
diff --git a/setup.py b/setup.py
index 61e1000..ec02275 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@
 from setuptools import setup, find_packages, Extension
 
 setup(name='DocumentTemplate',
-      version = '2.13.2',
+      version = '2.13.3dev',
       url='http://pypi.python.org/pypi/DocumentTemplate',
       license='ZPL 2.1',
       description="Document Templating Markup Language (DTML)",