[android-components](../../../index.md) / [mozilla.components.support.migration](../../index.md) / [FennecMigrator](../index.md) / [Builder](index.md) / [migrateGecko](./migrate-gecko.md)

# migrateGecko

`fun migrateGecko(version: `[`Int`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)` = Migration.Gecko.currentVersion): `[`Builder`](index.md) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/support/migration/src/main/java/mozilla/components/support/migration/FennecMigrator.kt#L328)

Enables the migration of Gecko internal files.

