diff --git a/docs/requirements.txt b/docs/requirements.txt
index 31455e34..357e3a78 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -23,7 +23,7 @@ Sphinx==1.8.1
 sphinx-autobuild==0.7.1
 sphinx-rtd-theme==0.4.2
 sphinxcontrib-websupport==1.1.0
-tornado==6.4.2
+tornado==6.5.1
 urllib3==1.26.19
 watchdog==0.9.0
 pyflakes==2.0.0