diff --git a/CHANGES.rst b/CHANGES.rst
index 9c31afc..46ec2ec 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,12 @@
 Changes
 =======
 
+4.4 (unreleased)
+----------------
+
+- Nothing changed yet.
+
+
 4.3 (2017-05-11)
 ----------------
 
diff --git a/setup.py b/setup.py
index c42cb2f..3606b7d 100644
--- a/setup.py
+++ b/setup.py
@@ -39,7 +39,7 @@ def alltests():
 
 
 setup(name='zope.authentication',
-      version='4.3',
+      version='4.4.dev0',
       author='Zope Foundation and Contributors',
       author_email='zope-dev@zope.org',
       description='Definition of authentication basics for the Zope Framework',