diff --git a/setup.py b/setup.py
index 27be6cfeb..ebbf6f0cd 100755
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,7 @@ install_requires = [
     "werkzeug",
     "pyaml",
     "pytz",
-    "python-dateutil<2.7.0,>=2.1",
+    "python-dateutil<3.0.0,>=2.1",
     "mock",
     "docker>=2.5.1",
     "jsondiff==1.1.1",