diff --git a/requirements.txt b/requirements.txt
index 3cee2da..b21fb8d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,4 +36,4 @@ termcolor==1.1.0
 traitlets==4.3.2
 typing==3.6.2
 wcwidth==0.1.7
-Werkzeug==0.12.2
+Werkzeug==0.15.3