How to update a node module with npm (npm update module?)

How to npm update module for node.js ?

(1) First step is to go to the folder node_module:

$> cd vendor/node_modules (modify for your own project)

(2) Run npm update <module>, let say the module is restify for example

$> npm update restify

To update to a specific version

For example restify 1.4.4  which is the latest of the 1.X series) :

$> npm install restify@1.4.4

Unrelated Note :

There is some doc on how to migrate your application when you update restify from 1.X to 2.X.. but it is incomplete. You also need to change req.contentType => req.contentType()

https://github.com/mcavage/node-restify/wiki/1.4-to-2.0-Migration-Tips

Done!