diff --git a/tutorials/requirements.txt b/tutorials/requirements.txt
index cd4e403..59a22c9 100644
--- a/tutorials/requirements.txt
+++ b/tutorials/requirements.txt
@@ -54,7 +54,7 @@ Send2Trash==1.5.0
 six==1.14.0
 terminado==0.8.3
 testpath==0.4.4
-tornado==6.0.4
+tornado==6.3.3
 traitlets==4.3.3
 transforms3d==0.3.1
 urllib3==1.25.8