diff --git a/requirements.txt b/requirements.txt
index 0c4a659..3b3e1fa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,3 +22,4 @@
 six>=1.4.1
 iso8601>=0.1.8
 fixtures>=0.3.14
+testscenarios>=0.4