diff --git a/docker/backend-requirements.txt b/docker/backend-requirements.txt
index 330c339..ca466a9 100644
--- a/docker/backend-requirements.txt
+++ b/docker/backend-requirements.txt
@@ -17,5 +17,5 @@ six==1.10.0
 tornado==4.5.1
 urllib3==1.22
 vine==1.1.4
-Werkzeug==0.12.2
+Werkzeug==0.15.3
 WTForms==2.1