diff --git a/webserver/app/doc/requirements.txt b/webserver/app/doc/requirements.txt
index 5e140ab..3306884 100644
--- a/webserver/app/doc/requirements.txt
+++ b/webserver/app/doc/requirements.txt
@@ -2,7 +2,7 @@ alembic==1.0.1
 cffi==1.11.5
 Click==7.0
 Flask==1.0.2
-Flask-Cors==3.0.7
+Flask-Cors==3.0.9
 Flask-Migrate==2.3.0
 Flask-SocketIO==3.0.2
 Flask-SQLAlchemy==2.3.2