diff --git a/hack/requirements.txt b/hack/requirements.txt
index 624c529..bbde2ea 100644
--- a/hack/requirements.txt
+++ b/hack/requirements.txt
@@ -6,7 +6,7 @@ nose==1.3.7
 flask==0.12
 numpy==1.13.0
 gunicorn==19.7.1
-flask-cors==3.0.2
+flask-cors==3.0.9
 uuid==1.30
 boto==2.46.1
 boto3==1.4.4