Pokémon Sleep will undergo maintenance on Thursday, June 25th at 4:00 AM (UTC) for an update to version 3.6.0. This maintenance is expected to last approximately five hours, concluding at 9:00 AM (UTC).
This update will bring significant adjustments, including an increase in unlocked Pokémon levels, research ranks, and recipe levels, while also preparing the game for an unannounced event.