diff --git a/services/exercises/requirements.txt b/services/exercises/requirements.txt
index 67fce19..3c53a30 100644
--- a/services/exercises/requirements.txt
+++ b/services/exercises/requirements.txt
@@ -1,7 +1,7 @@
 coverage==4.5.3
 flake8===3.7.7
 Flask==1.0.2
-flask-cors==3.0.7
+flask-cors==3.0.9
 flask-debugtoolbar==0.10.1
 flask-migrate==2.4.0
 Flask-RESTful==0.3.7