diff --git a/requirements.txt b/requirements.txt
index 81c830e..0b0e2e2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -44,5 +44,5 @@ twine==1.13.0
 typed-ast==1.2.0
 urllib3==1.24.2
 webencodings==0.5.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 wrapt==1.11.1