diff --git a/CHANGES.rst b/CHANGES.rst
index d32d791..2a7e17d 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,12 @@
 Changelog
 =========
 
+2.2.4 (unreleased)
+~~~~~~~~~~~~~~~~~~
+
+- Nothing changed yet.
+
+
 2.2.3 (2015-07-18)
 ~~~~~~~~~~~~~~~~~~
 
diff --git a/setup.py b/setup.py
index 4703514..74f8eba 100644
--- a/setup.py
+++ b/setup.py
@@ -1,6 +1,6 @@
 from setuptools import setup, find_packages
 
-version = '2.2.3'
+version = '2.2.4.dev0'
 __version__ = version
 
 setup(