I copied package.json from another project and now want to bump all of the dependencies to their latest versions since this is a fresh project and I don\'t mind
The only caveat I have found with the best answer above is that it updates the modules to the latest version. This means it could update to an unstable alpha build.
I would use that npm-check-updates utility. My group used this tool and it worked effectively by installing the stable updates.
As Etienne stated above: install and run with this:
$ npm install -g npm-check-updates
$ npm-check-updates -u
$ npm install