diff --git a/requirements.txt b/requirements.txt
index 1b41426..690094b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,4 +19,4 @@ requests==2.18.4
 six==1.11.0
 sympy==1.1.1
 urllib3==1.22
-Werkzeug==0.14.1
+Werkzeug==0.15.3