diff --git a/docker-image/locust-tasks/requirements.txt b/docker-image/locust-tasks/requirements.txt
index 3684955..a0e8602 100644
--- a/docker-image/locust-tasks/requirements.txt
+++ b/docker-image/locust-tasks/requirements.txt
@@ -8,4 +8,4 @@ MarkupSafe==0.23
 msgpack-python==0.4.6
 pyzmq==14.5.0
 requests==2.6.2
-Werkzeug==0.10.4
+Werkzeug==0.15.5