The n module worked for me.
Run this code to clear npm’s cache, install n, and install the latest stable version of Node:
sudo npm cache clean -f
sudo npm install -g n
sudo n stable
See: http://www.hostingadvice.com/how-to/update-node-js-latest-version/
And: https://www.npmjs.com/package/n
To install a specific version of node:
sudo n 18.17.1
To check what version:
node -v
You might need to restart