diff --git a/contracts/base/SelfPermit.sol b/contracts/base/SelfPermit.sol
index 45578be5..40449636 100644
--- a/contracts/base/SelfPermit.sol
+++ b/contracts/base/SelfPermit.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity >=0.5.0;
+pragma solidity ^0.8.19;
 
 import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import {IERC20Permit} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol";