ALTER TABLE community_users
  DEFAULT CHARACTER SET utf8mb4
  COLLATE utf8mb4_unicode_ci;

ALTER TABLE access_tokens
  DEFAULT CHARACTER SET utf8mb4
  COLLATE utf8mb4_unicode_ci;

ALTER TABLE puzzles
  DEFAULT CHARACTER SET utf8mb4
  COLLATE utf8mb4_unicode_ci;

ALTER TABLE puzzle_reviews
  DEFAULT CHARACTER SET utf8mb4
  COLLATE utf8mb4_unicode_ci;

ALTER TABLE schema_migrations
  DEFAULT CHARACTER SET utf8mb4
  COLLATE utf8mb4_unicode_ci;