# Using custom r.js versions Normally, grunt-requirejs instruments the latest r.js version to build your project. If you need to build your project against an older r.js version, you can do so by adding the special ´rjs´ option. ## Options ### rjs ```string``` (optional) This is used to define a path to a custom r.js version If you´re custom requirejs npm module is stored under ```node_modules/requirejs```, the rjs property should point to that folder. ## Example ```javascript requirejs: { mysourcemapped: { options: { rjs: '/path/to/my/custom/requirejs/version' baseUrl: 'my/project', name: 'project', out: 'dist/main-sourcemapped.js' } }, ```