diff --git a/setup.py b/setup.py
index 8909e16..71e260f 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@
       author='openego development group',
       author_email='oemof@rl-institut.de',
       description='ego input/output repository',
-      version='0.0.1-pre',
+      version='0.0.1rc1',
       url='https://github.com/openego/ego.io',
       packages=find_packages(),
       install_requires=[