diff --git a/requirements.txt b/requirements.txt
index 09a1999..1a12014 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -53,7 +53,7 @@ enum34==1.1.6
 et-xmlfile==1.0.1
 fastcache==1.0.2
 Flask==0.12
-Flask-Cors==3.0.2
+Flask-Cors==3.0.9
 future==0.16.0
 gast==0.2.0
 gensim==3.4.0