diff --git a/requirements.txt b/requirements.txt
index 2cbde7b..d9d7618 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,6 +10,6 @@ psycopg2==2.8.4
 shapely==1.7.0
 dicttoxml==1.7.4
 transaction==3.0.0
-waitress==1.4.3
+waitress==3.0.1
 zope.sqlalchemy==1.3
 simplejson==3.17.0