diff --git a/requirements.txt b/requirements.txt
index 42ee599..6140bff 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ coveralls==1.5.1
 cryptography==2.3.1
 docopt==0.6.2
 Flask==1.0.2
-Flask-Cors==3.0.7
+Flask-Cors==3.0.9
 Flask-RESTful==0.3.6
 gunicorn==19.9.0
 idna==2.7