migrations: t.references doesn't allow index name to be specified

I have the following in a migration: create_table :model_with_a_long_name do |t| t.references :other_model_with_an_equally_long_name, index: true end That produces an index with too long of a name for Postgres. Is there a way to manually specify the index name (without adding the integer column and the index separately)? Something like the following: create_table :model_with_a_long_name do |t| t.r