diff --git a/requirements.txt b/requirements.txt
index a9df345..6328026 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,5 +28,5 @@ sigtools==2.0.2
 six==1.11.0
 toml==0.9.4
 tzlocal==1.5.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 wrapt==1.10.11