diff --git a/requirements.txt b/requirements.txt
index 975b7bc..61b017c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -116,6 +116,6 @@ utils==0.9.0
 vine==1.1.3
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.12.2
+Werkzeug==0.15.3
 widgetsnbextension==2.0.0
 xhtml2pdf==0.0.6