diff --git a/requirements/dev.txt b/requirements/dev.txt
index c0d34ca..6cb1ad5 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -69,5 +69,5 @@ waitress==1.1.0
 webassets==0.12.1
 WebOb==1.8.5
 WebTest==2.0.32
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 WTForms==2.2.1
diff --git a/requirements/prod.txt b/requirements/prod.txt
index 86c576d..6b53273 100644
--- a/requirements/prod.txt
+++ b/requirements/prod.txt
@@ -48,5 +48,5 @@ unicodecsv==0.14.1
 urllib3==1.24.1
 vine==1.1.4
 webassets==0.12.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 WTForms==2.2.1