A repeat rapist faces more time behind bars after he failed to register himself as a sex offender following his release from prison.The man, Timothy Wayne Johnson, 46, has been indicted on the charge of failure to register with the state sexual offender registry in a timely manner. He could face up to two years in prison for the offense.Johnson was hit with the charges when he did not register himself within 48 hours of getting a new residence. State law requires offenders to update their status when they change residence.