diff --git a/pip_requirements.txt b/pip_requirements.txt
index 818a072..ed9c33a 100644
--- a/pip_requirements.txt
+++ b/pip_requirements.txt
@@ -1,7 +1,7 @@
 Flask==1.0
 Flask-Babel==0.9
 Jinja2>=2.10.1
-Werkzeug==0.15.4
+Werkzeug==0.15.5
 gunicorn==19.9.0
 python-dateutil==2.2
 requests==2.3.0