diff --git a/docs/.sphinx/pinned-requirements.txt b/docs/.sphinx/pinned-requirements.txt
index 024363a76c..388e74cb81 100644
--- a/docs/.sphinx/pinned-requirements.txt
+++ b/docs/.sphinx/pinned-requirements.txt
@@ -30,5 +30,5 @@ sphinxcontrib-htmlhelp==2.0.0
 sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.3
 sphinxcontrib-serializinghtml==1.1.5
-tornado==6.3.2
+tornado==6.3.3
 urllib3==1.26.13