How does installing or updating Tornado affect Jupyter Notebook's stability, and what should I be aware of?

Jupyter Notebook has a specific Tornado version dependency. Updating Tornado independently can sometimes break Jupyter if the new version is incompatible. It's generally recommended to update Jupyter Notebook itself (`pip install --upgrade jupyter`) which will manage Tornado updates within its dependencies. If you *must* update Tornado separately, check Jupyter's documentation for compatible versions.