How do I update devDependencies in NPM?

Question

npm update seems to just update the packages in dependencies, but what about devDependencies.

Right now you can install

Answer 1

These steps worked for me :

1. npm install -g npm-check-updates
2. ncu -u
3. npm update
4. npm install

Answer 2

I ran into the same problem as OP had, and found no solution, so I decided to write a Grunt plugin that will auto-update my devDependencies..

It's on Github, I'd love to get some input and collaborations in order to make it the best tool that NPM hasn't provided.

Basically it will auto-update your outdated development dependencies with a simple Grunt Task.

https://github.com/pgilad/grunt-dev-update