diff --git a/requirements.txt b/requirements.txt
index 6b3ba24..b7999b0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,4 +40,4 @@ Shapely==1.6.3
 six==1.11.0
 traitlets==4.3.2
 urllib3==1.22
-Werkzeug==0.14.1
+Werkzeug==0.15.3