diff --git a/requirements.txt b/requirements.txt
index 0e2cd76..3a181e7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ celery==4.2.0
 redis==2.10.5
 flask-caching==1.4.0
 Flask-Mail==0.9.1
-Flask-Cors==3.0.2
+Flask-Cors==3.0.9
 Flask-SocketIO==2.8.6
 mongoengine==0.13.0
 slackclient==1.0.5