diff --git a/requirements.txt b/requirements.txt
index 07f0d2c..f9239b2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,6 +36,6 @@ six==1.12.0
 SQLAlchemy==1.3.3
 typed-ast==1.3.4
 urllib3==1.24.1
-Werkzeug==0.15.2
+Werkzeug==0.15.3
 wrapt==1.11.1
 WTForms==2.2.1