diff --git a/requirements.txt b/requirements.txt
index f08dbb0..76883e0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,5 +4,5 @@ gunicorn==19.9.0
 itsdangerous==1.1.0
 Jinja2>=2.10.1
 MarkupSafe==1.1.0
-Werkzeug==0.14.1
+Werkzeug==0.15.5
 Pillow==5.3.0