diff --git a/CHANGES.rst b/CHANGES.rst
index 818fcc4..8909af6 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,12 @@ Changelog
 =========
 
 
+1.0 (unreleased)
+----------------
+
+- Nothing changed yet.
+
+
 0.12 (2013-03-12)
 -----------------
 
diff --git a/setup.py b/setup.py
index 8ab5c3d..e0c6294 100644
--- a/setup.py
+++ b/setup.py
@@ -19,7 +19,7 @@ long_description = (
 
 setup(
     name='collective.contact.widget',
-    version='0.12',
+    version='1.0.dev0',
     description="Contact widget",
     long_description=long_description,
     # Get more from http://pypi.python.org/pypi?%3Aaction=list_classifiers