diff --git a/demo_data/requirements.txt b/demo_data/requirements.txt
index 91aa4dc..532d5b7 100644
--- a/demo_data/requirements.txt
+++ b/demo_data/requirements.txt
@@ -251,7 +251,7 @@ text-unidecode==1.3
 threadpoolctl @ file:///tmp/tmp9twdgx9k/threadpoolctl-2.1.0-py3-none-any.whl
 toml @ file:///tmp/build/80754af9/toml_1592853716807/work
 toolz==0.10.0
-tornado==6.1
+tornado==6.3.2
 tqdm @ file:///tmp/build/80754af9/tqdm_1593446365756/work
 traitlets==5.0.5
 typing-extensions==3.7.4.3