diff --git a/requirement.txt b/requirement.txt
index e55e27f..0201d29 100644
--- a/requirement.txt
+++ b/requirement.txt
@@ -76,6 +76,6 @@ tqdm==4.25.0
 traitlets==4.3.2
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 widgetsnbextension==3.4.0
 wrapt==1.10.11