diff --git a/54_CrossChainBridge/readme.md b/54_CrossChainBridge/readme.md
index 45ed490e9..7c1932150 100644
--- a/54_CrossChainBridge/readme.md
+++ b/54_CrossChainBridge/readme.md
@@ -56,7 +56,7 @@ tags:
 
 ```solidity
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.20;
 
 import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
 import "@openzeppelin/contracts/access/Ownable.sol";
@@ -77,7 +77,7 @@ contract CrossChainToken is ERC20, Ownable {
         string memory name,
         string memory symbol,
         uint256 totalSupply
-    ) payable ERC20(name, symbol) {
+    ) payable ERC20(name, symbol) Ownable(msg.sender) {
         _mint(msg.sender, totalSupply);
     }