diff --git a/requirements.txt b/requirements.txt
index e8bc362..f1c6e46 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ lazy-object-proxy==1.4.3
 mccabe==0.6.1
 pylint==2.4.4
 six==1.13.0
-tornado==6.0.3
+tornado==6.3.2
 typed-ast==1.4.0
 wrapt==1.11.2
 zeroconf-py2compat==0.19.4