diff --git a/requirements.txt b/requirements.txt
index fcde738..25d31ee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,4 +12,4 @@ Pygments==2.7.4
 pymdown-extensions==6.0
 PyYAML==5.4
 six==1.12.0
-tornado==6.0.3
+tornado==6.3.2