diff --git a/requirements.txt b/requirements.txt
index 311cb03..f1067c2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ SQLAlchemy==1.0.4
 SQLAlchemy-Utils==0.30.7
 Shapely==1.5.8
 WTForms==2.0.2
-Werkzeug==0.10.4
+Werkzeug==0.15.5
 alembic==0.7.6
 aniso8601==0.92
 argparse==1.2.1