We are excited to announce that all 2i2c hubs now run JupyterHub 5.0! This is an upgrade that brings some exciting new features and improvements. Some of the highlights include: The possibility to enable user-initiated server sharing Authenticator-managed roles Also, JupyterHub 5 will enable us to offer per-group shared directories in the future! Tracking Issue. Checkout the JupyterHub 5.0 migration docs or the changelog for more details.