diff --git a/code/requirements.txt b/code/requirements.txt
index e25d6c1..ce9aaf8 100644
--- a/code/requirements.txt
+++ b/code/requirements.txt
@@ -164,7 +164,7 @@ unicodecsv==0.14.1
 urllib3==1.22
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.12.2
+Werkzeug==0.15.3
 widgetsnbextension==3.0.2
 win-inet-pton==1.0.1
 win-unicode-console==0.5
diff --git a/requirements.txt b/requirements.txt
index f3a5382..808afd4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -165,7 +165,7 @@ unicodecsv==0.14.1
 urllib3==1.22
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.12.2
+Werkzeug==0.15.3
 widgetsnbextension==3.0.2
 win-inet-pton==1.0.1
 win-unicode-console==0.5
diff --git a/submission/requirements.txt b/submission/requirements.txt
index 1201ad7..4e5adb9 100644
--- a/submission/requirements.txt
+++ b/submission/requirements.txt
@@ -165,7 +165,7 @@ unicodecsv==0.14.1
 urllib3==1.22
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.12.2
+Werkzeug==0.15.3
 widgetsnbextension==3.0.2
 win-inet-pton==1.0.1
 win-unicode-console==0.5