diff --git a/S01 - Bootcamp and Binary Classification/SLU00 - LU Tutorial/requirements.txt b/S01 - Bootcamp and Binary Classification/SLU00 - LU Tutorial/requirements.txt
index c6f103edd..faa631dfb 100644
--- a/S01 - Bootcamp and Binary Classification/SLU00 - LU Tutorial/requirements.txt	
+++ b/S01 - Bootcamp and Binary Classification/SLU00 - LU Tutorial/requirements.txt	
@@ -51,7 +51,7 @@ six==1.14.0               # via bleach, jsonschema, nbgrader, pyrsistent, python
 sqlalchemy==1.3.16        # via alembic, nbgrader
 terminado==0.8.3          # via notebook
 testpath==0.4.4           # via nbconvert
-tornado==6.0.4            # via ipykernel, jupyter-client, nbgrader, notebook, terminado
+tornado==6.4.2            # via ipykernel, jupyter-client, nbgrader, notebook, terminado
 traitlets==4.3.3          # via ipykernel, ipython, ipywidgets, jupyter-client, jupyter-core, nbconvert, nbformat, nbgrader, notebook, qtconsole
 urllib3==1.25.9           # via requests
 wcwidth==0.1.9            # via prompt-toolkit