Within Express, how can I add core modules to my package.json dependencies so I can require them in my js files?

I'm trying to use the core module 'connect' and, if I understand the situation correctly, express uses that module internally. I want to require it manually, and I've tried to insert it into my dependencies within my package.json file. Maybe I'm not installing it correctly with my git bash? I'm taking shots in the dark here, but here are my dependencies within the file.

"dependencies": {
"connect": "2.4.2",
"accepts": "~1.3.3",
"array-flatten": "1.1.1",
"content-disposition": "0.5.2",
"content-type": "~1.0.2",
"cookie": "0.3.1",
"cookie-signature": "1.0.6",
"debug": "2.6.7",
"depd": "~1.1.0",
"encodeurl": "~1.0.1",
"escape-html": "~1.0.3",
"etag": "~1.8.0",
"finalhandler": "~1.0.3",
"fresh": "0.5.0",
"merge-descriptors": "1.0.1",
"methods": "~1.1.2",
"on-finished": "~2.3.0",
"parseurl": "~1.3.1",
"path-to-regexp": "0.1.7",
"proxy-addr": "~1.1.4",
"qs": "6.4.0",
"range-parser": "~1.2.0",
"send": "0.15.3",
"serve-static": "1.12.3",
"setprototypeof": "1.0.3",
"statuses": "~1.3.1",
"type-is": "~1.6.15",
"utils-merge": "1.0.0",
"vary": "~1.1.1"

}

via Forrest Carlton