diff --git a/setup.py b/setup.py
index 0a746f449df545562e8401c7beab2f4f90dadc10..098ee4b554256db08db0c513b2621c53c31c696d 100644
--- a/setup.py
+++ b/setup.py
@@ -17,6 +17,7 @@ setup(
         'jsonschema',
         'python-dateutil',
         'click',
+        'contextdecorator',
     ],
     entry_points='''
         [console_scripts]