diff --git a/setup.py b/setup.py
index 4c07924..6ea043c 100755
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@ with open('README.rst', 'r') as f:
 
 setup(
     name='python-socketio',
-    version='0.3.0',
+    version='0.4.0',
     url='http://github.com/miguelgrinberg/python-socketio/',
     license='MIT',
     author='Miguel Grinberg',