diff --git a/requirements.txt b/requirements.txt
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,6 +21,7 @@ python-dateutil==2.6.0
 pyusb==1.0.0
 rdflib==4.2.2
 restkit==4.2.2
+scipy==0.19.0
 service_identity==16.0.0
 statprof==0.1.2
 toposort==1.5