npm install the exact package version specified in package.json
By default npm installs packages using ^ which means any version in the same major range, you can switch this behaviour by using –save-exact // npm npm install –save –save-exact react // yarn yarn add –exact react I created a blog post about this if anyone is looking for this in the future. https://www.dalejefferson.com/articles/2018-02-04-how-to-save-exact-npm-package-versions/