diff --git a/CHANGES b/CHANGES
index f0802cc09..fa1d9fd83 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+Release 1.2.4 (in development)
+==============================
+
+
 Release 1.2.3 (released Sep 1, 2014)
 ====================================
 
diff --git a/sphinx/__init__.py b/sphinx/__init__.py
index acee982f7..49bbc284c 100644
--- a/sphinx/__init__.py
+++ b/sphinx/__init__.py
@@ -15,7 +15,7 @@
 import sys
 from os import path
 
-__version__  = '1.2.3'
+__version__  = '1.2.3+'
 __released__ = '1.2.3'  # used when Sphinx builds its own docs
 # version info for better programmatic use
 # possible values for 3rd element: 'alpha', 'beta', 'rc', 'final'