node.js - How to add dependency to package.json later -

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in application have installed few node modules using below command

 npm install <modulename>

i forgot mention "--save" save dependency list package.json file.

now update dependencies in package.json file without updating file manually . idea how can done ?

you can run same command again, specifying --save flag , automatically included in package.json. problem version of package can updated newer version, may specify specific version of app: npm --save app@1.0.1.

alternatively can modify package.json include dependency: 

"dependencies": {     "module: "*" }

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