diff --git a/CHANGES b/CHANGES
index 8a6169ece..cd8410d3b 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+Release 0.6.6 (in development)
+==============================
+
+
 Release 0.6.5 (Mar 01, 2010)
 ============================
 
diff --git a/sphinx/__init__.py b/sphinx/__init__.py
index 60c1b9a42..6bcdfb9b8 100644
--- a/sphinx/__init__.py
+++ b/sphinx/__init__.py
@@ -12,7 +12,7 @@
 import sys
 from os import path
 
-__version__ = '0.6.5'
+__version__ = '0.6.5+'
 __released__ = '0.6.5'  # used when Sphinx builds its own docs
 
 package_dir = path.abspath(path.dirname(__file__))