diff --git a/foundry.toml b/foundry.toml
index 5ffd160ee..ca24bd427 100644
--- a/foundry.toml
+++ b/foundry.toml
@@ -1,5 +1,5 @@
 [profile.default]
-solc = "0.8.17"
+solc = "0.8.23"
 src = 'src'
 out = 'out'
 libs = ['lib']
diff --git a/src/ETHPriceIsRight.sol b/src/ETHPriceIsRight.sol
index d6ea1b65c..c54580b4c 100644
--- a/src/ETHPriceIsRight.sol
+++ b/src/ETHPriceIsRight.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.12;
+pragma solidity ^0.8.23;
 
 import {IETHPriceIsRight} from "./interfaces/IETHPriceIsRight.sol";
 import "@openzeppelin/contracts/access/Ownable.sol";
diff --git a/src/Faucet.sol b/src/Faucet.sol
index fc0c16415..6c8da16a0 100644
--- a/src/Faucet.sol
+++ b/src/Faucet.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.12;
+pragma solidity ^0.8.23;
 
 import {IFaucet} from "./interfaces/IFaucet.sol";
 import "@openzeppelin/contracts/access/Ownable.sol";
diff --git a/src/KintoID.sol b/src/KintoID.sol
index ed75844d2..a3da00c19 100644
--- a/src/KintoID.sol
+++ b/src/KintoID.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.12;
+pragma solidity ^0.8.23;
 
 /* External Imports */
 import "@openzeppelin/contracts-upgradeable/token/ERC721/ERC721Upgradeable.sol";
diff --git a/src/interfaces/IKYCViewer.sol b/src/interfaces/IKYCViewer.sol
index fecd31735..28ee928aa 100644
--- a/src/interfaces/IKYCViewer.sol
+++ b/src/interfaces/IKYCViewer.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity ^0.8.12;
+pragma solidity ^0.8.23;
 
 import "./IKintoID.sol";
 import "./IKintoWalletFactory.sol";
diff --git a/src/libraries/ByteSignature.sol b/src/libraries/ByteSignature.sol
index 9a6a3e1a3..28f3b7238 100644
--- a/src/libraries/ByteSignature.sol
+++ b/src/libraries/ByteSignature.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.12;
+pragma solidity ^0.8.23;
 
 library ByteSignature {
     function extractTwoSignatures(bytes memory _fullSignature)
diff --git a/src/paymasters/SponsorPaymaster.sol b/src/paymasters/SponsorPaymaster.sol
index 06c8e6ddc..1eb062a66 100644
--- a/src/paymasters/SponsorPaymaster.sol
+++ b/src/paymasters/SponsorPaymaster.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.12;
+pragma solidity ^0.8.23;
 
 /* solhint-disable reason-string */
 
diff --git a/src/proxy/SafeBeaconProxy.sol b/src/proxy/SafeBeaconProxy.sol
index e8a4e8fc5..0edf4ec6c 100644
--- a/src/proxy/SafeBeaconProxy.sol
+++ b/src/proxy/SafeBeaconProxy.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.12;
+pragma solidity ^0.8.23;
 
 import {UpgradeableBeacon} from "@openzeppelin/contracts/proxy/beacon/UpgradeableBeacon.sol";
 import {BeaconProxy} from "@openzeppelin/contracts/proxy/beacon/BeaconProxy.sol";
diff --git a/src/sample/Counter.sol b/src/sample/Counter.sol
index 0ab7cb927..e60fc639c 100644
--- a/src/sample/Counter.sol
+++ b/src/sample/Counter.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.12;
+pragma solidity ^0.8.23;
 
 contract Counter {
     uint256 public count;
diff --git a/src/tokens/EngenCredits.sol b/src/tokens/EngenCredits.sol
index a628f593f..854fed786 100644
--- a/src/tokens/EngenCredits.sol
+++ b/src/tokens/EngenCredits.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.12;
+pragma solidity ^0.8.23;
 
 import "@openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol";
 import "@openzeppelin/contracts-upgradeable/token/ERC20/extensions/ERC20BurnableUpgradeable.sol";
diff --git a/src/viewers/KYCViewer.sol b/src/viewers/KYCViewer.sol
index 99ee7a03d..1ae6c927a 100644
--- a/src/viewers/KYCViewer.sol
+++ b/src/viewers/KYCViewer.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.12;
+pragma solidity ^0.8.23;
 
 import "@openzeppelin/contracts/utils/Create2.sol";
 import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
diff --git a/src/wallet/KintoWallet.sol b/src/wallet/KintoWallet.sol
index ced6dd4d5..b1912b908 100644
--- a/src/wallet/KintoWallet.sol
+++ b/src/wallet/KintoWallet.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.12;
+pragma solidity ^0.8.23;
 
 import "@openzeppelin/contracts/utils/Address.sol";
 import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
diff --git a/src/wallet/KintoWalletFactory.sol b/src/wallet/KintoWalletFactory.sol
index 49cdec463..d5a122794 100644
--- a/src/wallet/KintoWalletFactory.sol
+++ b/src/wallet/KintoWalletFactory.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.12;
+pragma solidity ^0.8.23;
 
 import "@openzeppelin/contracts/utils/Create2.sol";
 import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
diff --git a/test/DeployTests.t.sol b/test/DeployTests.t.sol
index c0da5a16f..2b4bcda19 100644
--- a/test/DeployTests.t.sol
+++ b/test/DeployTests.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity ^0.8.12;
+pragma solidity ^0.8.23;
 
 import "../src/wallet/KintoWallet.sol";
 import "../src/wallet/KintoWalletFactory.sol";
diff --git a/test/EngenCredits.t.sol b/test/EngenCredits.t.sol
index 5883c9abf..6a5eb8b8d 100644
--- a/test/EngenCredits.t.sol
+++ b/test/EngenCredits.t.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.12;
+pragma solidity ^0.8.23;
 
 import "../src/tokens/EngenCredits.sol";
 import "forge-std/Test.sol";
diff --git a/test/KintoWallet.t.sol b/test/KintoWallet.t.sol
index cbf1598a5..aaa421173 100644
--- a/test/KintoWallet.t.sol
+++ b/test/KintoWallet.t.sol
@@ -187,7 +187,8 @@ contract KintoWalletTest is AATestScaffolding, UserOp {
         // sender prefunds the contract
         vm.deal(address(_kintoWalletv1), 1 ether);
         vm.prank(address(_kintoWalletv1));
-        payable(address(counter)).call{value: 1 ether}("");
+        (bool success,) = payable(address(counter)).call{value: 1 ether}("");
+        assertEq(success, true);
 
         UserOperation[] memory userOps = new UserOperation[](2);
 
diff --git a/test/SponsorPaymastExploit.t.sol b/test/SponsorPaymastExploit.t.sol
index cf0b7c9f6..fede593e2 100644
--- a/test/SponsorPaymastExploit.t.sol
+++ b/test/SponsorPaymastExploit.t.sol
@@ -32,7 +32,7 @@ contract MyOpCreator is UserOp, KYCSignature {
         uint256 value,
         bytes calldata _bytesOp,
         address _paymaster
-    ) public returns (UserOperation memory op) {
+    ) public view returns (UserOperation memory op) {
         op = UserOperation({
             sender: _account,
             nonce: nonce,