diff --git a/nipap/requirements.txt b/nipap/requirements.txt
index b506d47f7..8ae432dc6 100644
--- a/nipap/requirements.txt
+++ b/nipap/requirements.txt
@@ -19,7 +19,7 @@ pyparsing==2.4.7
 python-dateutil==2.8.1
 pytz==2021.1
 pyjwt==1.5.3
-tornado==6.1
+tornado==6.3.3
 docutils==0.16
 # optional dependencies below
 python-ldap==3.3.1