diff --git a/requirements.txt b/requirements.txt
index e358c01..67cfc93 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 bokeh==1.3.4
 Flask==1.0.2
-Flask-Cors==3.0.8
+Flask-Cors==3.0.9
 Flask-RESTful==0.3.7
 Flask-WTF== 0.14.2
 Jinja2==2.10.1