diff --git a/setup.py b/setup.py
index 94a524f..7d10554 100644
--- a/setup.py
+++ b/setup.py
@@ -15,7 +15,7 @@ if sys.version_info < (3, 0):
 
 setup(
     name='isso',
-    version='0.2',
+    version='0.3.dev0',
     author='Martin Zimmermann',
     author_email='info@posativ.org',
     packages=find_packages(),