diff --git a/build/requirements.txt b/build/requirements.txt
index b0289237..22870fe0 100644
--- a/build/requirements.txt
+++ b/build/requirements.txt
@@ -12,7 +12,7 @@ dnspython==1.15.0
 enum34==1.1.6
 Flask==0.12.2
 Flask-Bcrypt==0.7.1
-Flask-Cors==3.0.3
+Flask-Cors==3.0.9
 Flask-Login==0.4.1
 Flask-PyMongo==0.5.1
 funcsigs==1.0.2