diff --git a/TrackingNtuples/scripts/mlenv-requirements.txt b/TrackingNtuples/scripts/mlenv-requirements.txt
index fc79e9c..56e9de9 100644
--- a/TrackingNtuples/scripts/mlenv-requirements.txt
+++ b/TrackingNtuples/scripts/mlenv-requirements.txt
@@ -88,5 +88,5 @@ uproot-methods==0.4.4
 urllib3==1.24.1
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 widgetsnbextension==3.4.2
diff --git a/TrackingNtuples/scripts/venv-requirements.txt b/TrackingNtuples/scripts/venv-requirements.txt
index 2cb1324..91d092b 100644
--- a/TrackingNtuples/scripts/venv-requirements.txt
+++ b/TrackingNtuples/scripts/venv-requirements.txt
@@ -88,5 +88,5 @@ virtualenv-clone==0.4.0
 virtualenvwrapper==4.8.2
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 widgetsnbextension==3.4.2