diff --git a/api/requirements.txt b/api/requirements.txt
index 891fc93..b5e968a 100644
--- a/api/requirements.txt
+++ b/api/requirements.txt
@@ -12,4 +12,4 @@ python-dateutil==2.6.1
 pytz==2017.3
 PyYAML==3.12
 six==1.11.0
-Werkzeug==0.12.2
+Werkzeug==0.15.3