diff --git a/requirements_all.txt b/requirements_all.txt
index 06825f6..a62117a 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -80,7 +80,7 @@ soupsieve==2.4.1
 terminado==0.17.1
 testpath==0.6.0
 tinycss2==1.2.1
-tornado==6.2
+tornado==6.5.1
 traitlets==5.9.0
 typing_extensions==4.7.1
 Unidecode==1.3.7