diff --git a/TgBot/requirements.txt b/TgBot/requirements.txt
index e9d818d..99044bb 100644
--- a/TgBot/requirements.txt
+++ b/TgBot/requirements.txt
@@ -37,7 +37,7 @@ snowballstemmer==1.2.1
 Sphinx==1.7.2
 sphinxcontrib-websupport==1.0.1
 urllib3==1.22
-waitress==1.4.1
+waitress==2.1.1
 WebOb==1.7.4
 WebTest==2.0.29
 wrapt==1.10.11