diff --git a/docs/conf.py b/docs/conf.py
index <HASH>..<HASH> 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -9,8 +9,8 @@ exclude_patterns = ['_build']
 project = u'Flask-Nav'
 copyright = u'2015, Marc Brinkmann'
 author = u'Marc Brinkmann'
-version = '0.4'
-release = '0.4.dev1'
+version = '0.5'
+release = '0.5.dev1'
 
 pygments_style = 'sphinx'
 html_theme = 'alabaster'
diff --git a/setup.py b/setup.py
index <HASH>..<HASH> 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@ def read(fname):
 
 setup(
     name='flask-nav',
-    version='0.4.dev1',
+    version='0.5.dev1',
     description='Easily create navigation for Flask applications.',
     long_description=read('README.rst'),
     author='Marc Brinkmann',
Start developing version <I>.dev1 (after release of <I>)