so there's a project, package.json { "name": "Node-Express4-Session", "version": "0.0.1", "main": "server.js", "dependencies": { "body-parser": "^1.7.0", "ejs": "^1.0.0", "express": "^4.8.7", "express-session": "^1.7.6" } } now the express version is 4.12.3, what do you do with other packages then ?