diff --git a/requirements/edx/base.txt b/requirements/edx/base.txt
index 49372b9b78..bbf0641adc 100644
--- a/requirements/edx/base.txt
+++ b/requirements/edx/base.txt
@@ -147,6 +147,7 @@ pep8==1.5.7
 PyContracts==1.7.1
 pylint==1.4.1
 python-subunit==0.0.16
+radon==1.2
 rednose==0.3
 selenium==2.42.1
 splinter==0.5.4