diff --git a/setup.py b/setup.py
index <HASH>..<HASH> 100644
--- a/setup.py
+++ b/setup.py
@@ -36,7 +36,7 @@ setup(
         'elasticsearch==1.6.0',
         'numpy==1.11.0',
         'ProxyTypes==0.9',
-        'python-dateutil>=2.4.2',
+        'python-dateutil>=2.5.2',
         'pytz>=2015.6',
         'requests>=2.8.1',
         'setuptools>=0.6',
Bump python-dateutil to <I>