diff --git a/requirements-gpu-py36.txt b/requirements-gpu-py36.txt
index f71086b..ce6a8c9 100644
--- a/requirements-gpu-py36.txt
+++ b/requirements-gpu-py36.txt
@@ -64,4 +64,4 @@ tornado==5.1.1
 traitlets==4.3.2
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
diff --git a/requirements-py36.txt b/requirements-py36.txt
index 0a7b527..9478704 100644
--- a/requirements-py36.txt
+++ b/requirements-py36.txt
@@ -86,4 +86,4 @@ traitlets==4.3.2
 urllib3==1.22
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3