diff --git a/requirements.txt b/requirements.txt
index 9b88e98..9e894bb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 Flask==1.1.2
 #netifaces==0.10.9
-waitress==2.0.0
+waitress==2.1.1
 paho-mqtt==1.5.1
 requests==2.25.1
 requests-toolbelt==0.9.1