diff --git a/docs/requirements.txt b/docs/requirements.txt
index 2e698c54..0cc6ae9c 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -15,5 +15,5 @@ pymdown-extensions==8.0.1
 PyYAML==5.4.1
 regex==2020.9.27
 six==1.15.0
-tornado==6.0.4
+tornado==6.3.2
 tqdm==4.50.1