diff --git a/requirements.txt b/requirements.txt
index eb1fe31..1aef4aa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,5 +29,5 @@ SQLAlchemy==1.3.3
 traitlets==4.3.2
 typed-ast==1.3.5
 wcwidth==0.1.7
-Werkzeug==0.15.4
+Werkzeug==0.15.5
 wrapt==1.11.1