diff --git a/requirements.txt b/requirements.txt
index 9b25d3d..0b079d5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 Flask==1.1.2
-waitress==1.4.3
+waitress==2.1.1
 Flask-Sitemap==0.3.0
 requests==2.23.0
 beautifulsoup4==4.9.0