diff --git a/requirements.txt b/requirements.txt
index 18f4aa8..6a2586f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ docopt==0.6.2
 ecdsa==0.13
 Events==0.3
 Flask==1.0.2
-Flask-Cors==3.0.6
+Flask-Cors==3.0.9
 Flask-JSONRPC==0.3.1
 Flask-SQLAlchemy==2.3.2
 gevent==1.2.2