diff --git a/phenopipe-web/requirements.txt b/phenopipe-web/requirements.txt
index 9a5ed07..0da10a3 100644
--- a/phenopipe-web/requirements.txt
+++ b/phenopipe-web/requirements.txt
@@ -14,7 +14,7 @@ enum==0.4.6
 enum34==1.1.6
 et-xmlfile==1.0.1
 Flask==0.11.1
-Flask-Cors==3.0.2
+Flask-Cors==3.0.9
 Flask-GraphQL==1.4.0
 Flask-JWT-Extended==1.3.0
 Flask-Migrate==2.0.3