To update Node.js, follow the respective guide based on your operating system.For Linux (including Ubuntu/Mint), you can use Node Version Manager (NVM) to install and manage multiple versions of Node.js.For Windows, you can update Node.js using NVM-Windows or by downloading and running the Node.js installer.On macOS, you can update Node.js using NVM or Homebrew, or by downloading and running the Node.js installer.