diff --git a/flask-server/requirements.txt b/flask-server/requirements.txt
index 2e93968f..01741bdc 100644
--- a/flask-server/requirements.txt
+++ b/flask-server/requirements.txt
@@ -8,7 +8,7 @@ click==7.1.2
 cryptography==2.9.2
 Flask==1.1.2
 Flask-Bcrypt==0.7.1
-Flask-Cors==3.0.8
+Flask-Cors==6.0.0
 gcloud==0.18.3
 google==2.0.3
 google-api-core==1.22.0