diff --git a/requirements.txt b/requirements.txt
index 85b7ed4..3a976eb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ absl-py==0.7.1
 astor==0.7.1
 click==6.7
 Flask==1.0.2
-Flask-Cors==3.0.7
+Flask-Cors==3.0.9
 gast==0.2.2
 grpcio==1.20.1
 h5py==2.8.0