diff --git a/docket/requirements.txt b/docket/requirements.txt
index ae48772..502b21d 100644
--- a/docket/requirements.txt
+++ b/docket/requirements.txt
@@ -31,4 +31,4 @@ simplejson==3.10.0
 six==1.10.0
 urllib3==1.21.1
 vine==1.1.3
-Werkzeug==0.12.2
+Werkzeug==0.15.3