// File: /app/contracts/Migrations.sol



pragma solidity 0.6.12;

contract Migrations {
  address public owner;

  uint public last_completed_migration;

  modifier restricted() {
    if (msg.sender == owner) _;
  }

  constructor()  public{
    owner = msg.sender;
  }


  function setCompleted(uint completed)external restricted {
    last_completed_migration = completed;
  }

  function upgrade(address new_address) external {
    Migrations upgraded = Migrations(new_address);
    upgraded.setCompleted(last_completed_migration);
  }
}