diff --git a/requirements.txt b/requirements.txt
index 4e82d1f..b46ef8b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,7 +32,7 @@ translationstring==1.4
 ujson==4.0.2
 urllib3==1.26.3
 venusian==3.0.0
-waitress==1.4.4
+waitress==2.0.0
 WebOb==1.8.7
 zope.deprecation==4.4.0
 zope.interface==5.2.0