diff --git a/pmp_backend/requirements.txt b/pmp_backend/requirements.txt
index c6321ce..d4c8ded 100644
--- a/pmp_backend/requirements.txt
+++ b/pmp_backend/requirements.txt
@@ -3,7 +3,7 @@ pip == 19.0.1
 SQLAlchemy == 1.2.17
 pyjwt == 1.7.1
 flask_sqlalchemy == 2.3.2
-flask_cors == 3.0.7
+flask_cors == 3.0.9
 flask_socketio == 3.1.2
 gevent == 1.4.0
 gevent-websocket == 0.10.1