diff --git a/requirements.txt b/requirements.txt
index 96b67ea..7dae382 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -58,6 +58,6 @@ tasktiger==0.9.5
 typed-ast==1.3.1
 urllib3==1.24.2
 webassets==0.12.1
-Werkzeug==0.15.1
+Werkzeug==0.15.3
 wrapt==1.11.1
 WTForms==2.2.1