On September 22, 2021, the Financial Services Agency issued a gyōmu kaizen meirei, a business improvement order, to Mizuho Bank, which had suffered repeated system failures. Under Article 26(1) of the Banking Act, the bank had to re-examine its plans for renewing its systems and submit them by October 29.
In its own notice, Mizuho said it would strengthen the saihatsu bōshi-saku, the measures against recurrence, that it had published on June 15, and add points drawn from the failures that had occurred since August 20.