diff --git a/requirements.txt b/requirements.txt
index a37830c..b6c3b15 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ entrypoints==0.3
 firebase-admin==4.0.1
 flake8==3.7.9
 Flask==1.1.1
-Flask-Cors==3.0.1
+Flask-Cors==3.0.9
 Flask-Migrate==2.5.2
 Flask-Script==2.0.6
 Flask-SQLAlchemy==2.4.1