diff --git a/requirements.txt b/requirements.txt
index 4a21023..e3763c7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,5 +38,5 @@ stripe==1.62.1
 update==0.4.4
 urllib3==1.22
 vine==1.1.4
-waitress==0.9.0
+waitress==2.1.1
 wheel==0.29.0