diff --git a/requirements.txt b/requirements.txt
index 95881ee..6c20b15 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ idna==3.6
     # via requests
 pywebio==1.8.3
 requests==2.31.0
-tornado==6.4
+tornado==6.4.2
     # via pywebio
 ua-parser==0.18.0
     # via user-agents