diff --git a/api/requirements.txt b/api/requirements.txt
index 72eed0c..e470ce7 100644
--- a/api/requirements.txt
+++ b/api/requirements.txt
@@ -1,6 +1,6 @@
 Flask==1.0.2
 Flask-BasicAuth==0.2.0
-Flask-Cors==3.0.6
+Flask-Cors==3.0.9
 Flask-RESTful==0.3.6
 scikit-learn==0.19.2
 numpy==1.16.2