--- layout: api title: "v3.0.0 JavaScript Library: Upgrading from Mapbox.js v1" categories: api version: v3.0.0 permalink: /api/v3.0.0/upgrading-from-mapbox-js-v1/ ---

Upgrading from Mapbox.js v1

In a few cases, you may need to make changes to code written for Mapbox.js 1.x versions in order to work with Mapbox.js 2.x.