diff --git a/setup.py b/setup.py
index f240a62c..964a43e1 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@ from os.path import join, dirname
 from setuptools import setup, find_packages
 import sys
 
-VERSION = (5, 2, 0. 'dev')
+VERSION = (5, 2, 0, 'dev')
 __version__ = VERSION
 __versionstr__ = '.'.join(map(str, VERSION))