diff --git a/distributor/requirements.txt b/distributor/requirements.txt
index 21da021..4c89c7a 100644
--- a/distributor/requirements.txt
+++ b/distributor/requirements.txt
@@ -1,6 +1,6 @@
 requests==2.20.1
 Flask==1.0.2
-waitress==1.4.4
+waitress==2.1.1
 Flask-Cors==3.0.9
 jsonschema==2.6.0
 simplejson==3.17.0