diff --git a/requirements.txt b/requirements.txt
index f357559..b7cd25b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 flake8==3.7.8
 pep8>=1.7,<1.7.99
-ddt==1.2.1
+ddt==1.4.1
 coveralls>=1.2.0
 jsonschema>=2.6.0
 -e .