diff --git a/requirements.txt b/requirements.txt
index d893ad2..591ba27 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ requests-oauthlib==1.3.0
 six==1.16.0
 slack-webhook==1.0.6
 toml==0.10.2
-tornado==6.1
+tornado==6.4.2
 tweepy==3.10.0
 tzlocal==2.1
 urllib3==1.26.5