diff --git a/requirements.txt b/requirements.txt
index 08568cd..9baaeb8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,5 +11,5 @@ MarkupSafe==2.0.1
 requests>=2.24.0
 SQLAlchemy==1.4.25
 urllib3>=1.26.5
-waitress==1.4.4
+waitress==2.1.1
 Werkzeug==2.0.1