From cf15874731bc0a8b0739711bcda7c41bac655747 Mon Sep 17 00:00:00 2001
From: Aleksey Bykhun <theisease@gmail.com>
Date: Tue, 17 Jul 2018 11:48:42 +0300
Subject: [PATCH 1/2] Update Feeless.sol to 0.4.24

---
 contracts/Feeless.sol | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/contracts/Feeless.sol b/contracts/Feeless.sol
index ed0b758..c34ff71 100644
--- a/contracts/Feeless.sol
+++ b/contracts/Feeless.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.4.23;
+pragma solidity ^0.4.24;
 
 import { ECRecovery } from "zeppelin-solidity/contracts/ECRecovery.sol";
 
@@ -22,7 +22,8 @@ contract Feeless {
         require(this == target);
         
         bytes memory prefix = "\x19Ethereum Signed Message:\n32";
-        bytes32 hash = keccak256(prefix, keccak256(target, data, nonce));
+        bytes32 payload = keccak256(abi.encodePacked(target, data, nonce));
+        bytes32 hash = keccak256(abi.encodePacked(prefix, payload));
         msgSender = ECRecovery.recover(hash, sig);
         require(msgSender == sender);
         require(nonces[msgSender]++ == nonce);

From d8e3d354777eff0f71fed5758b8adde4abf81426 Mon Sep 17 00:00:00 2001
From: Aleksey Bykhun <theisease@gmail.com>
Date: Tue, 17 Jul 2018 12:21:12 +0300
Subject: [PATCH 2/2] Update Migrations.sol

---
 contracts/Migrations.sol | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/contracts/Migrations.sol b/contracts/Migrations.sol
index a1151cd..c94abbf 100644
--- a/contracts/Migrations.sol
+++ b/contracts/Migrations.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.4.23;
+pragma solidity ^0.4.24;
 
 
 contract Migrations {
@@ -10,7 +10,7 @@ contract Migrations {
         if (msg.sender == owner) _;
     }
 
-    function Migrations() public {
+    constructor () public {
         owner = msg.sender;
     }