diff --git a/docker/plotter/requirements.txt b/docker/plotter/requirements.txt
index 95fc0e6..f0cddd9 100644
--- a/docker/plotter/requirements.txt
+++ b/docker/plotter/requirements.txt
@@ -16,5 +16,5 @@ python-dateutil==2.7.5
 s3transfer==0.1.13
 six==1.12.0
 urllib3==1.24.1
-waitress==1.1.0
+waitress==1.4.1
 Werkzeug==0.14.1