diff --git a/CHANGES.rst b/CHANGES.rst
index 79d9b5c5..fd4e0533 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -4,6 +4,12 @@ Flask Changelog
 ===============
 
 
+Version 1.0.3
+-------------
+
+Unreleased
+
+
 Version 1.0.2
 -------------
 
diff --git a/flask/__init__.py b/flask/__init__.py
index ded19822..6e475ed1 100644
--- a/flask/__init__.py
+++ b/flask/__init__.py
@@ -10,7 +10,7 @@
     :license: BSD, see LICENSE for more details.
 """
 
-__version__ = '1.0.2'
+__version__ = '1.0.3.dev'
 
 # utilities we import from Werkzeug and Jinja2 that are unused
 # in the module but are exported as public interface.