diff --git a/requirements.txt b/requirements.txt
index 361e626..d85b956 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 Flask==1.1.1
-Flask-Cors==3.0.8
+Flask-Cors==3.0.9
 gunicorn==19.9.0
 requests==2.22.0
 scikit-image==0.15.0