diff --git a/requirements.txt b/requirements.txt
index 5b97bb3d..502fd4bc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ simplegeneric==0.8.1
 six==1.10.0
 sqlparse==0.1.18
 traitlets==4.0.0
-Werkzeug==0.11.3
+Werkzeug==0.15.3
 wheel==0.24.0
 whitenoise==2.0.6
 Django~=1.9.3