diff --git a/requirements.txt b/requirements.txt
index 4ed28c3..3ee8ad3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,5 +38,5 @@ requests==2.20.1
 six==1.11.0
 typed-ast==1.1.0
 urllib3==1.24.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 wrapt==1.10.11