diff --git a/requirements.txt b/requirements.txt
index 75e657a..d7eec1e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ fbmessenger==5.2.0
 pykwalify<=1.6.0
 coloredlogs==10.0
 flask==1.0.2
-flask_cors==3.0.4
+flask_cors==3.0.9
 scikit-learn==0.19.2
 spacy==2.0.6
 rasa_nlu~=0.13.3