diff --git a/setup.py b/setup.py
index cc6bfe1f..87374929 100644
--- a/setup.py
+++ b/setup.py
@@ -30,7 +30,7 @@
 HISTORY = open(os.path.join(here, 'HISTORY.rst')).read()
 
 
-install_requires = ['babelfish>=0.5.4', 'stevedore>=0.14', 'requests', 'python-dateutil>=2.1']
+install_requires = ['babelfish>=0.5.5', 'stevedore>=0.14', 'requests', 'python-dateutil>=2.1']
 if sys.version_info < (2, 7):
     # argparse is part of the standard library in python 2.7+
     install_requires.append('argparse')