Migrate from increments to bigIncrements from existing table

Im been searching around on how to migrate changes from increments() to bigIncrements() using existing tables.

Error : SQLSTATE[HY000]: General error: 1833 Cannot change column 'id': used in a foreign key constraint 'account_users_acc_id_foreign' of table 'mydatabasename.account_users' (SQL: ALTER TABLE accounts CHANGE id id BIGINT UNSIGNED AUTO_INCREMENT NOT NULL)

i tried to disabled constraint using Schema::disableForeignKeyConstraints()

Error : SQLSTATE[HY000]: General error: 1025 Error on rename of './mydatabasename/#sql-ea_201' to './mydatabasename/accounts' (errno: 150 - Foreign key constraint is incorrectly formed) (SQL: ALTER TABLE accounts CHANGE id id BIGINT UNSIGNED AUTO_INCREMENT NOT NULL)

in my up() function:

Is there anywhere to solve this?

via Chebli Mohamed