diff --git a/foundry/foundry.toml b/foundry/foundry.toml
index 086c3ac..a3c8d7b 100644
--- a/foundry/foundry.toml
+++ b/foundry/foundry.toml
@@ -2,7 +2,7 @@
 src = 'src'
 out = 'out'
 libs = ['lib']
-solc = "0.8.18"
+solc = "0.8.28"
 evm_version = 'shanghai'
 optimizer = true
 optimizer_runs = 1000
diff --git a/foundry/src/Counter.sol b/foundry/src/Counter.sol
index aded799..574cf8f 100644
--- a/foundry/src/Counter.sol
+++ b/foundry/src/Counter.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity ^0.8.13;
+pragma solidity ^0.8.28;
 
 contract Counter {
     uint256 public number;
diff --git a/foundry/src/TychoRouter.sol b/foundry/src/TychoRouter.sol
index b3423ad..1de6e9c 100644
--- a/foundry/src/TychoRouter.sol
+++ b/foundry/src/TychoRouter.sol
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.28;
+
 contract FrontendSwapRouter {
     constructor() {}
 }
diff --git a/foundry/test/Counter.t.sol b/foundry/test/Counter.t.sol
index 54b724f..3840a3f 100644
--- a/foundry/test/Counter.t.sol
+++ b/foundry/test/Counter.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity ^0.8.13;
+pragma solidity ^0.8.28;
 
 import {Test, console} from "forge-std/Test.sol";
 import {Counter} from "../src/Counter.sol";