diff --git a/requirements.txt b/requirements.txt
index 2a38f99..f9ec3db 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ pyopenssl==17.5.0
 requests==2.18.4
 ipython==5.5.0
 marshmallow==2.15.0
-flask-cors==3.0.3
+flask-cors==3.0.9
 pyrabbit==1.1.0
 flower==0.9.2
 CMRESHandler==1.0.0