diff --git a/requirements.txt b/requirements.txt
index dd2a67c..d93d842 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ filelock==2.0.12
 flake8==3.4.0
 Flask==0.12.3
 Flask-Compress==1.4.0
-Flask-Cors==3.0.3
+Flask-Cors==3.0.9
 future==0.16.0
 gevent==1.2.2
 glob2==0.5