diff --git a/dev-requirements.txt b/dev-requirements.txt
index f51401750d..0a5cebfc06 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,5 +1,5 @@
 coverage==6.4
-tornado==6.2
+tornado==6.5.3
 PySocks==1.7.1
 pytest==7.0.0
 pytest-timeout==2.1.0