diff --git a/requirements.txt b/requirements.txt
index 4cbe9de..94b9ba8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 gunicorn==19.9.0
 google-cloud-storage==1.13.0
 Flask==1.0.2
-Flask-Cors==3.0.7
+Flask-Cors==3.0.9
 Flask-WTF==0.14.2
 glob2==0.6
 h5py==2.8.0