diff --git a/requirements.txt b/requirements.txt
index 648546a..055110a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,4 +27,4 @@ requests==2.18.4
 six==1.11.0
 typed-ast==1.1.0
 urllib3==1.22
-Werkzeug==0.13
+Werkzeug==0.15.3