diff --git a/requirements.txt b/requirements.txt
index 3fb320c..49784c5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ requests-oauthlib==1.3.0
 six==1.15.0
 SQLAlchemy==1.3.17
 urllib3==1.25.8
-waitress==1.4.4
+waitress==2.1.1
 Werkzeug==1.0.0
 WTForms==2.3.1
 zipp==3.1.0