diff --git a/requirements.txt b/requirements.txt
index 68f38dc..39ee71a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,3 +31,4 @@ simplejson==3.3.3
 six==1.4.1
 wsgiref==0.1.2
 zope.interface==4.1.0
+stratum==0.2.15