diff --git a/README.txt b/README.txt
index 28f0a358d..0485a2203 100644
--- a/README.txt
+++ b/README.txt
@@ -2,7 +2,7 @@
 English README file for OpenSlides
 ==================================
 
-This is OpenSlides, version 1.3 (2012-12-10).
+This is OpenSlides, version 1.3.1 (unreleased).
 
 
 What is OpenSlides?
diff --git a/openslides/__init__.py b/openslides/__init__.py
index 139bf67d1..a349ef61b 100644
--- a/openslides/__init__.py
+++ b/openslides/__init__.py
@@ -5,8 +5,8 @@
     :license: GNU GPL, see LICENSE for more details.
 """
 
-VERSION = (1, 3, 0, 'final', 0)  # During development it is the next release
-RELEASE = True
+VERSION = (1, 3, 1, 'alpha', 0)  # During development it is the next release
+RELEASE = False
 
 
 def get_version(version=None, release=None):