diff --git a/requirements.txt b/requirements.txt
index 6a289d3..d7e3f65 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -48,7 +48,7 @@ et-xmlfile==1.0.1
 fastcache==1.0.2
 filelock==3.0.4
 Flask==1.0.2
-Flask-Cors==3.0.4
+Flask-Cors==3.0.9
 gevent==1.3.0
 glob2==0.6
 gmpy2==2.0.8