diff --git a/contracts/src/tester/ConformanceTester.sol b/contracts/src/tester/ConformanceTester.sol
index 19a9075c..95d0b719 100644
--- a/contracts/src/tester/ConformanceTester.sol
+++ b/contracts/src/tester/ConformanceTester.sol
@@ -1,10 +1,10 @@
 // SPDX-License-Identifier: GPL-3.0
-pragma solidity ^0.8.21;
+pragma solidity ^0.8.23;
 
 contract ConformanceTester {
     string public name;
     mapping(address => uint) public balances;
-    string public constant RevertErrorMessage = "Test Revert Error Message"; 
+    string public constant RevertErrorMessage = "Test Revert Error Message";
 
     constructor(string memory _name) {
         name = _name;
diff --git a/contracts/src/tester/LoadTester.sol b/contracts/src/tester/LoadTester.sol
index 05593545..62532d9f 100644
--- a/contracts/src/tester/LoadTester.sol
+++ b/contracts/src/tester/LoadTester.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0
-pragma solidity ^0.8.21;
+pragma solidity ^0.8.23;
 
 contract LoadTester {
     uint256 callCounter;
diff --git a/contracts/src/tokens/ERC20.sol b/contracts/src/tokens/ERC20.sol
index 0e20477f..c2bc9aa6 100644
--- a/contracts/src/tokens/ERC20.sol
+++ b/contracts/src/tokens/ERC20.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0
-pragma solidity ^0.8.21;
+pragma solidity ^0.8.23;
 
 import {ERC20 as OZ_ERC20} from "@openzeppelin/token/ERC20/ERC20.sol" ;
 
diff --git a/contracts/src/tokens/ERC721.sol b/contracts/src/tokens/ERC721.sol
index 3b42f9f1..fa726986 100644
--- a/contracts/src/tokens/ERC721.sol
+++ b/contracts/src/tokens/ERC721.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0
-pragma solidity ^0.8.21;
+pragma solidity ^0.8.23;
 
 import {ERC721 as OZ_ERC721} from "@openzeppelin/token/ERC721/ERC721.sol";