diff --git a/requirements.txt b/requirements.txt
index 3546fa2..dea942b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ coverage==4.5.1
 cryptography==2.3.1
 Flask==1.0.2
 Flask-Caching==1.4.0
-Flask-Cors==3.0.6
+Flask-Cors==3.0.9
 gevent==1.3.6
 greenlet==0.4.15
 idna==2.7