diff --git a/CHANGES b/CHANGES
index 3a8e8bf89..cf7afdb33 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+Release 0.6.4 (in development)
+==============================
+
+
 Release 0.6.3 (Sep 03, 2009)
 ============================
 
diff --git a/sphinx/__init__.py b/sphinx/__init__.py
index bebfa70bf..5b5980ed3 100644
--- a/sphinx/__init__.py
+++ b/sphinx/__init__.py
@@ -12,7 +12,7 @@
 import sys
 from os import path
 
-__version__ = '0.6.3'
+__version__ = '0.6.3+'
 __released__ = '0.6.3'  # used when Sphinx builds its own docs
 
 package_dir = path.abspath(path.dirname(__file__))