diff --git a/CHANGES.rst b/CHANGES.rst
index e3dc206..75ba92a 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,12 @@
 Changelog
 =========
 
+2.4.2 (unreleased)
+------------------
+
+- Nothing changed yet.
+
+
 2.4.1 (2015-03-26)
 ------------------
 
diff --git a/setup.py b/setup.py
index e5bdd7b..61d8431 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 from setuptools import find_packages
 from setuptools import setup
 
-version = '2.4.1'
+version = '2.4.2.dev0'
 
 install_requires = [
     'setuptools',