  function updateDaiBalance() public {
    uint256 _actBalance = iERC20Token(daiToken).balanceOf(address(this));
    uint256 _daiAmount = safeSub(_actBalance, holdoverDaiBalance);
    holdoverDaiBalance = safeAdd(holdoverDaiBalance, _daiAmount);
    totalDaiReceived = safeAdd(totalDaiReceived, _daiAmount);
  }