# Override The Default Yarn Version When you first deploy an app to [Netlify](https://www.netlify.com/), the current default [Yarn](https://yarnpkg.com/) version will be locked in. This Yarn version will be used for future builds and deployments. You can override the default Yarn version by including the `YARN_VERSION` environment variable. Set it to the desired major and minor version in the app settings panel. The next deployment will use that new version. [source](https://community.netlify.com/t/default-yarn-version-is-now-1-17/2297)