diff --git a/test/foundry/ERC20Outbox.t.sol b/test/foundry/ERC20Outbox.t.sol
index f97e96be..165d1657 100644
--- a/test/foundry/ERC20Outbox.t.sol
+++ b/test/foundry/ERC20Outbox.t.sol
@@ -14,7 +14,13 @@ contract ERC20OutboxTest is AbsOutboxTest {
 
     function setUp() public {
         // deploy token, bridge and outbox
-        nativeToken = new ERC20PresetFixedSupply("Appchain Token", "App", 1_000_000, address(this));
+
+        // hardcoded proof in tests assume that this contract is deployed at the repsective address
+        IERC20 nativeTokenCode = new ERC20PresetFixedSupply("Appchain Token", "App", 1_000_000, address(this));
+        nativeToken = IERC20(0xFEfC6BAF87cF3684058D62Da40Ff3A795946Ab06);
+        vm.etch(address(nativeToken), address(nativeTokenCode).code);
+        deal(address(nativeToken), address(this), 1_000_000);
+        
         bridge = IBridge(TestUtil.deployProxy(address(new ERC20Bridge())));
         erc20Bridge = ERC20Bridge(address(bridge));
         outbox = IOutbox(TestUtil.deployProxy(address(new ERC20Outbox())));
@@ -51,7 +57,10 @@ contract ERC20OutboxTest is AbsOutboxTest {
         );
 
         // create msg receiver on L1
-        ERC20L2ToL1Target target = new ERC20L2ToL1Target();
+        // hardcoded proof in tests assume that this contract is deployed at the repsective address
+        ERC20L2ToL1Target targetCode = new ERC20L2ToL1Target();
+        ERC20L2ToL1Target target = ERC20L2ToL1Target(0x87B2d08110B7D50861141D7bBDd49326af3Ecb31);
+        vm.etch(address(target), address(targetCode).code);
         target.setOutbox(address(outbox));
 
         //// execute transaction