diff --git a/CHANGELOG b/CHANGELOG
index 45dc452a6..f775be81c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -4,6 +4,10 @@
 
 https://openslides.org/
 
+Version 2.1.2 (unreleased)
+==========================
+
+
 Version 2.1.1 (2017-04-05)
 ==========================
 [https://github.com/OpenSlides/OpenSlides/milestones/2.1.1]
diff --git a/openslides/__init__.py b/openslides/__init__.py
index 9766748cf..a1e659cde 100644
--- a/openslides/__init__.py
+++ b/openslides/__init__.py
@@ -1,3 +1,3 @@
 __author__ = 'OpenSlides Team <support@openslides.org>'
 __description__ = 'Presentation and assembly system'
-__version__ = '2.1.1'
+__version__ = '2.1.2-dev'