diff --git a/web/requirements.txt b/web/requirements.txt
index 1bc0e7ab..cc774d18 100644
--- a/web/requirements.txt
+++ b/web/requirements.txt
@@ -25,6 +25,6 @@ sphinxcontrib-htmlhelp==2.0.0
 sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.3
 sphinxcontrib-serializinghtml==1.1.5
-tornado==6.1
+tornado==6.4.1
 urllib3==1.26.19
 breathe==4.33.1