diff --git a/requirements.txt b/requirements.txt
index 0176ab1..c96e575 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,4 +13,4 @@ pymdown-extensions==6.0
 PyYAML==5.1.1
 singledispatch==3.4.0.3
 six==1.12.0
-tornado==5.1.1
+tornado==6.0.3