diff --git a/inema/__init__.py b/inema/__init__.py
index c59da1b..3716529 100644
--- a/inema/__init__.py
+++ b/inema/__init__.py
@@ -1 +1,2 @@
 from .inema import Internetmarke
+from .inema import __version__
diff --git a/inema/inema.py b/inema/inema.py
index eef91bc..74d62df 100644
--- a/inema/inema.py
+++ b/inema/inema.py
@@ -11,6 +11,8 @@ import requests, zipfile
 import io
 import logging
 
+__version__ = "0.5"
+
 _logger = logging.getLogger(__name__)
 
 products_json = resource_stream(__name__, "data/products.json").read().decode()
diff --git a/setup.py b/setup.py
index 7855217..4c2dc15 100644
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,5 @@
 from setuptools import find_packages, setup
+from inema import __version__
 
 install_requires = [
         'zeep >= 0.12.0',
@@ -7,7 +8,7 @@ install_requires = [
 
 setup(
         name='inema',
-        version='0.4',
+        version=__version__,
         description='A Python interface to the Deutsche Post Internetmarke Online Franking',
         long_description=open('README.rst').read(),
         author='Harald Welte',