diff --git a/requirements.txt b/requirements.txt
index 1158358..b944f40 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,4 +10,4 @@ Pygments==2.7.4
 pymdown-extensions==6.0
 PyYAML==5.4
 six==1.12.0
-tornado==5.1.1
+tornado==6.3.2