diff --git a/CHANGES.txt b/CHANGES.txt
index 28d8fed..c5f8e9f 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,6 +1,12 @@
 Changelog
 =========
 
+1.0b10 (unreleased)
+-------------------
+
+- Nothing changed yet.
+
+
 1.0b9 (2010-10-07)
 ------------------
 
diff --git a/setup.py b/setup.py
index 5e0ab08..e8008d3 100644
--- a/setup.py
+++ b/setup.py
@@ -1,6 +1,6 @@
 from setuptools import setup, find_packages
 
-version = '1.0b9'
+version = '1.0b10dev'
 
 setup(name='plone.app.discussion',
       version=version,