diff --git a/CHANGES.rst b/CHANGES.rst
index 88e7d2c..2a9b9e2 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,12 @@ Changelog
 =========
 
 
+0.12 (unreleased)
+-----------------
+
+- Nothing changed yet.
+
+
 0.11 (2017-03-16)
 -----------------
 
diff --git a/setup.py b/setup.py
index 8eb7721..9e6bfa3 100644
--- a/setup.py
+++ b/setup.py
@@ -19,7 +19,7 @@
 
 setup(
     name='collective.messagesviewlet',
-    version='0.11',
+    version='0.12.dev0',
     description="Add-on displaying manager defined messages in a viewlet",
     long_description=long_description,
     # Get more from http://pypi.python.org/pypi?%3Aaction=list_classifiers