# zkSync contracts v5.2 upgrade announcement

This upgrade includes features for the upcoming wallet integrations and some minor refactoring.

# Changes

The exact changes in the code of the contracts can be found here (opens new window)

# Added

  • Additional method for CREATE2 ChangePubKey authorization with extra custom data (wallet-specific).
  • Events for the pending withdrawals (in case a withdrawal fails over low gas limit).

# Changed

  • Code cleanup after the previous upgrade with regenesis.
  • Various minor / stylistic fixes.