diff --git a/merchant-server/requirements.txt b/merchant-server/requirements.txt
index 838f10c..e64b8a1 100644
--- a/merchant-server/requirements.txt
+++ b/merchant-server/requirements.txt
@@ -6,7 +6,7 @@ chardet==3.0.4
 click==7.1.2
 firebase-admin==4.3.0
 Flask==1.1.2
-Flask-Cors==3.0.8
+Flask-Cors==5.0.0
 google-api-core==1.17.0
 google-api-python-client==1.8.3
 google-auth==1.15.0