diff --git a/requirements.txt b/requirements.txt
index adc6c76..da9b6da 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -48,5 +48,5 @@ Shapely==1.6.4.post1
 six==1.11.0
 traitlets==4.3.2
 urllib3==1.24.1
-Werkzeug==0.15.2
+Werkzeug==0.15.3
 zope.interface==4.6.0