diff --git a/helix-contract/contracts/ln/LnDefaultBridge.sol b/helix-contract/contracts/ln/LnDefaultBridge.sol
index 266a1a2a..ab56a387 100644
--- a/helix-contract/contracts/ln/LnDefaultBridge.sol
+++ b/helix-contract/contracts/ln/LnDefaultBridge.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "@zeppelin-solidity/contracts/proxy/utils/Initializable.sol";
 import "./base/LnAccessController.sol";
diff --git a/helix-contract/contracts/ln/LnOppositeBridge.sol b/helix-contract/contracts/ln/LnOppositeBridge.sol
index 8bdfb6ca..3c959cbd 100644
--- a/helix-contract/contracts/ln/LnOppositeBridge.sol
+++ b/helix-contract/contracts/ln/LnOppositeBridge.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "@zeppelin-solidity/contracts/proxy/utils/Initializable.sol";
 import "./base/LnAccessController.sol";
diff --git a/helix-contract/contracts/ln/base/LnAccessController.sol b/helix-contract/contracts/ln/base/LnAccessController.sol
index d21c6cfa..8f2cb263 100644
--- a/helix-contract/contracts/ln/base/LnAccessController.sol
+++ b/helix-contract/contracts/ln/base/LnAccessController.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 /// @title LnAccessController
 /// @notice LnAccessController is a contract to control the access permission 
@@ -34,7 +34,7 @@ contract LnAccessController {
         operator = _operator;
     }
 
-    function authoriseAppCaller(address appAddress, bool enable) onlyOperator external {
+    function authoriseAppCaller(address appAddress, bool enable) onlyDao external {
         callerWhiteList[appAddress] = enable;
     }
 
diff --git a/helix-contract/contracts/ln/base/LnBridgeHelper.sol b/helix-contract/contracts/ln/base/LnBridgeHelper.sol
index d7fb4662..76fad68b 100644
--- a/helix-contract/contracts/ln/base/LnBridgeHelper.sol
+++ b/helix-contract/contracts/ln/base/LnBridgeHelper.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "@zeppelin-solidity/contracts/token/ERC20/IERC20.sol";
 
diff --git a/helix-contract/contracts/ln/base/LnDefaultBridgeSource.sol b/helix-contract/contracts/ln/base/LnDefaultBridgeSource.sol
index 702a2eb4..0419cf45 100644
--- a/helix-contract/contracts/ln/base/LnDefaultBridgeSource.sol
+++ b/helix-contract/contracts/ln/base/LnDefaultBridgeSource.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "@zeppelin-solidity/contracts/security/Pausable.sol";
 import "./LnBridgeHelper.sol";
diff --git a/helix-contract/contracts/ln/base/LnDefaultBridgeTarget.sol b/helix-contract/contracts/ln/base/LnDefaultBridgeTarget.sol
index 634cd6d9..dc569d72 100644
--- a/helix-contract/contracts/ln/base/LnDefaultBridgeTarget.sol
+++ b/helix-contract/contracts/ln/base/LnDefaultBridgeTarget.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "./LnBridgeHelper.sol";
 
diff --git a/helix-contract/contracts/ln/base/LnOppositeBridgeSource.sol b/helix-contract/contracts/ln/base/LnOppositeBridgeSource.sol
index 5e6597d7..dcba7de7 100644
--- a/helix-contract/contracts/ln/base/LnOppositeBridgeSource.sol
+++ b/helix-contract/contracts/ln/base/LnOppositeBridgeSource.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "@zeppelin-solidity/contracts/security/Pausable.sol";
 import "./LnBridgeHelper.sol";
diff --git a/helix-contract/contracts/ln/base/LnOppositeBridgeTarget.sol b/helix-contract/contracts/ln/base/LnOppositeBridgeTarget.sol
index 2cabc71f..e616c500 100644
--- a/helix-contract/contracts/ln/base/LnOppositeBridgeTarget.sol
+++ b/helix-contract/contracts/ln/base/LnOppositeBridgeTarget.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "../interface/ILnOppositeBridgeSource.sol";
 import "./LnBridgeHelper.sol";
diff --git a/helix-contract/contracts/ln/interface/ILnDefaultBridgeTarget.sol b/helix-contract/contracts/ln/interface/ILnDefaultBridgeTarget.sol
index a3958e08..b6258847 100644
--- a/helix-contract/contracts/ln/interface/ILnDefaultBridgeTarget.sol
+++ b/helix-contract/contracts/ln/interface/ILnDefaultBridgeTarget.sol
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MIT
+pragma solidity >=0.8.17;
 
-pragma solidity >=0.8.10;
 import "../base/LnBridgeHelper.sol";
 
 interface ILnDefaultBridgeTarget {
diff --git a/helix-contract/contracts/ln/interface/ILnOppositeBridgeSource.sol b/helix-contract/contracts/ln/interface/ILnOppositeBridgeSource.sol
index 77cf67aa..00881ecb 100644
--- a/helix-contract/contracts/ln/interface/ILnOppositeBridgeSource.sol
+++ b/helix-contract/contracts/ln/interface/ILnOppositeBridgeSource.sol
@@ -1,6 +1,5 @@
 // SPDX-License-Identifier: MIT
-
-pragma solidity >=0.8.10;
+pragma solidity >=0.8.17;
 
 interface ILnOppositeBridgeSource {
     function slash(
diff --git a/helix-contract/contracts/ln/interface/ILowLevelMessager.sol b/helix-contract/contracts/ln/interface/ILowLevelMessager.sol
index 7b959402..c79fad74 100644
--- a/helix-contract/contracts/ln/interface/ILowLevelMessager.sol
+++ b/helix-contract/contracts/ln/interface/ILowLevelMessager.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 interface ILowLevelMessageSender {
     function registerRemoteReceiver(uint256 remoteChainId, address remoteBridge) external;
diff --git a/helix-contract/contracts/ln/messager/AxelarMessager.sol b/helix-contract/contracts/ln/messager/AxelarMessager.sol
index 61d6ec1b..27fa9fbe 100644
--- a/helix-contract/contracts/ln/messager/AxelarMessager.sol
+++ b/helix-contract/contracts/ln/messager/AxelarMessager.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import { StringToAddress, AddressToString } from '@axelar-network/axelar-gmp-sdk-solidity/contracts/libs/AddressString.sol';
 import "../interface/ILowLevelMessager.sol";
@@ -56,7 +56,7 @@ contract AxelarMessager is LnAccessController {
         emit CallResult(_sourceChain, _sourceAddress, success);
     }
 
-    function setRemoteMessager(uint256 _appRemoteChainId, string calldata _remoteChainName, address _remoteMessager) onlyOperator external {
+    function setRemoteMessager(uint256 _appRemoteChainId, string calldata _remoteChainName, address _remoteMessager) onlyDao external {
         remoteMessagers[_appRemoteChainId] = RemoteMessager(_remoteChainName, _remoteMessager);
         trustedRemotes[_remoteChainName] = _remoteMessager;
     }
diff --git a/helix-contract/contracts/ln/messager/DebugMessager.sol b/helix-contract/contracts/ln/messager/DebugMessager.sol
index e30da0c0..42447323 100644
--- a/helix-contract/contracts/ln/messager/DebugMessager.sol
+++ b/helix-contract/contracts/ln/messager/DebugMessager.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "../base/LnBridgeHelper.sol";
 import "../interface/ILnDefaultBridgeTarget.sol";
diff --git a/helix-contract/contracts/ln/messager/Eth2ArbReceiveService.sol b/helix-contract/contracts/ln/messager/Eth2ArbReceiveService.sol
index 29b8560e..25cc3542 100644
--- a/helix-contract/contracts/ln/messager/Eth2ArbReceiveService.sol
+++ b/helix-contract/contracts/ln/messager/Eth2ArbReceiveService.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "@arbitrum/nitro-contracts/src/libraries/AddressAliasHelper.sol";
 import "../base/LnAccessController.sol";
@@ -22,7 +22,7 @@ contract Eth2ArbReceiveService is ILowLevelMessageReceiver, LnAccessController {
         REMOTE_CHAINID = _remoteChainId;
     }
 
-    function setRemoteMessager(address _remoteMessager) onlyOperator external {
+    function setRemoteMessager(address _remoteMessager) onlyDao external {
         remoteMessagerAlias = AddressAliasHelper.applyL1ToL2Alias(_remoteMessager);
     }
 
diff --git a/helix-contract/contracts/ln/messager/Eth2ArbSendService.sol b/helix-contract/contracts/ln/messager/Eth2ArbSendService.sol
index 2aca06ae..d35e39b7 100644
--- a/helix-contract/contracts/ln/messager/Eth2ArbSendService.sol
+++ b/helix-contract/contracts/ln/messager/Eth2ArbSendService.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "@arbitrum/nitro-contracts/src/bridge/IInbox.sol";
 import "../base/LnAccessController.sol";
@@ -18,7 +18,7 @@ contract Eth2ArbSendService is ILowLevelMessageSender, LnAccessController {
         REMOTE_CHAINID = _remoteChainId;
     }
 
-    function setRemoteMessager(address _remoteMessager) onlyOperator external {
+    function setRemoteMessager(address _remoteMessager) onlyDao external {
         remoteMessager = _remoteMessager;
     }
 
diff --git a/helix-contract/contracts/ln/messager/Eth2LineaReceiveService.sol b/helix-contract/contracts/ln/messager/Eth2LineaReceiveService.sol
index f91a8971..cbad876a 100644
--- a/helix-contract/contracts/ln/messager/Eth2LineaReceiveService.sol
+++ b/helix-contract/contracts/ln/messager/Eth2LineaReceiveService.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "./interface/ILineaMessageService.sol";
 import "../base/LnAccessController.sol";
@@ -25,7 +25,7 @@ contract Eth2LineaReceiveService is ILowLevelMessageReceiver, LnAccessController
         REMOTE_CHAINID = _remoteChainId;
     }
 
-    function setRemoteMessager(address _remoteMessager) onlyOperator external {
+    function setRemoteMessager(address _remoteMessager) onlyDao external {
         remoteMessager = _remoteMessager;
     }
 
diff --git a/helix-contract/contracts/ln/messager/Eth2LineaSendService.sol b/helix-contract/contracts/ln/messager/Eth2LineaSendService.sol
index caa18cbc..ea925b69 100644
--- a/helix-contract/contracts/ln/messager/Eth2LineaSendService.sol
+++ b/helix-contract/contracts/ln/messager/Eth2LineaSendService.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "./interface/ILineaMessageService.sol";
 import "../base/LnAccessController.sol";
@@ -19,7 +19,7 @@ contract Eth2LineaSendService is ILowLevelMessageSender, LnAccessController {
         REMOTE_CHAINID = _remoteChainId;
     }
 
-    function setRemoteMessager(address _remoteMessager) onlyOperator external {
+    function setRemoteMessager(address _remoteMessager) onlyDao external {
         remoteMessager = _remoteMessager;
     }
 
diff --git a/helix-contract/contracts/ln/messager/Eth2ZkSyncReceiveService.sol b/helix-contract/contracts/ln/messager/Eth2ZkSyncReceiveService.sol
index cecd7345..66fc42ce 100644
--- a/helix-contract/contracts/ln/messager/Eth2ZkSyncReceiveService.sol
+++ b/helix-contract/contracts/ln/messager/Eth2ZkSyncReceiveService.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "./interface/IZksyncMailbox.sol";
 import "../base/LnAccessController.sol";
@@ -25,7 +25,7 @@ contract Eth2ZkSyncReceiveService is ILowLevelMessageReceiver, LnAccessControlle
         REMOTE_CHAINID = _remoteChainId;
     }
 
-    function setRemoteMessager(address _remoteMessager) onlyOperator external {
+    function setRemoteMessager(address _remoteMessager) onlyDao external {
         remoteMessagerAlias = address(uint160(_remoteMessager) + offset);
     }
 
diff --git a/helix-contract/contracts/ln/messager/Eth2ZkSyncSendService.sol b/helix-contract/contracts/ln/messager/Eth2ZkSyncSendService.sol
index b2a8d916..032ef912 100644
--- a/helix-contract/contracts/ln/messager/Eth2ZkSyncSendService.sol
+++ b/helix-contract/contracts/ln/messager/Eth2ZkSyncSendService.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "./interface/IZksyncMailbox.sol";
 import "../base/LnAccessController.sol";
@@ -19,7 +19,7 @@ contract Eth2ZkSyncSendService is ILowLevelMessageSender, LnAccessController {
         REMOTE_CHAINID = _remoteChainId;
     }
 
-    function setRemoteMessager(address _remoteMessager) onlyOperator external {
+    function setRemoteMessager(address _remoteMessager) onlyDao external {
         remoteMessager = _remoteMessager;
     }
 
diff --git a/helix-contract/contracts/ln/messager/LayerZeroMessager.sol b/helix-contract/contracts/ln/messager/LayerZeroMessager.sol
index 80e2a397..9f204809 100644
--- a/helix-contract/contracts/ln/messager/LayerZeroMessager.sol
+++ b/helix-contract/contracts/ln/messager/LayerZeroMessager.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "./interface/ILayerZeroEndpoint.sol";
 import "../interface/ILowLevelMessager.sol";
@@ -37,7 +37,7 @@ contract LayerZeroMessager is LnAccessController {
         _;
     }
 
-    function setRemoteMessager(uint256 _appRemoteChainId, uint16 _lzRemoteChainId, address _remoteMessager) onlyOperator external {
+    function setRemoteMessager(uint256 _appRemoteChainId, uint16 _lzRemoteChainId, address _remoteMessager) onlyDao external {
         remoteMessagers[_appRemoteChainId] = RemoteMessager(_lzRemoteChainId, _remoteMessager);
         trustedRemotes[_lzRemoteChainId] = keccak256(abi.encodePacked(_remoteMessager, address(this)));
     }
diff --git a/helix-contract/contracts/ln/messager/interface/IAxelarGasReceiver.sol b/helix-contract/contracts/ln/messager/interface/IAxelarGasReceiver.sol
index 93db727b..0c66d785 100644
--- a/helix-contract/contracts/ln/messager/interface/IAxelarGasReceiver.sol
+++ b/helix-contract/contracts/ln/messager/interface/IAxelarGasReceiver.sol
@@ -1,6 +1,5 @@
 // SPDX-License-Identifier: MIT
-
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 interface IAxelarGasReceiver {
     function payNativeGasForContractCall(
diff --git a/helix-contract/contracts/ln/messager/interface/IAxelarGateway.sol b/helix-contract/contracts/ln/messager/interface/IAxelarGateway.sol
index dfa5cb97..95b38152 100644
--- a/helix-contract/contracts/ln/messager/interface/IAxelarGateway.sol
+++ b/helix-contract/contracts/ln/messager/interface/IAxelarGateway.sol
@@ -1,6 +1,5 @@
 // SPDX-License-Identifier: MIT
-
-pragma solidity ^0.8.9;
+pragma solidity ^0.8.17;
 
 interface IAxelarGateway {
     function callContract(
diff --git a/helix-contract/contracts/ln/messager/interface/ILayerZeroEndpoint.sol b/helix-contract/contracts/ln/messager/interface/ILayerZeroEndpoint.sol
index ff124d8b..1918ba8d 100644
--- a/helix-contract/contracts/ln/messager/interface/ILayerZeroEndpoint.sol
+++ b/helix-contract/contracts/ln/messager/interface/ILayerZeroEndpoint.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 interface ILayerZeroEndpoint {
     function send(
diff --git a/helix-contract/contracts/ln/messager/interface/ILineaMessageService.sol b/helix-contract/contracts/ln/messager/interface/ILineaMessageService.sol
index 090038fc..ded01c65 100644
--- a/helix-contract/contracts/ln/messager/interface/ILineaMessageService.sol
+++ b/helix-contract/contracts/ln/messager/interface/ILineaMessageService.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 interface ILineaMessageService {
   function sendMessage(address _to, uint256 _fee, bytes calldata _calldata) external payable;
diff --git a/helix-contract/contracts/ln/messager/interface/IZksyncMailbox.sol b/helix-contract/contracts/ln/messager/interface/IZksyncMailbox.sol
index 2264bf6d..29c3765a 100644
--- a/helix-contract/contracts/ln/messager/interface/IZksyncMailbox.sol
+++ b/helix-contract/contracts/ln/messager/interface/IZksyncMailbox.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 interface IMailbox {
     function requestL2Transaction(
diff --git a/helix-contract/contracts/ln/test/MockEth2ArbReceiveService.sol b/helix-contract/contracts/ln/test/MockEth2ArbReceiveService.sol
index 44de548b..9b2439cf 100644
--- a/helix-contract/contracts/ln/test/MockEth2ArbReceiveService.sol
+++ b/helix-contract/contracts/ln/test/MockEth2ArbReceiveService.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "../messager/Eth2ArbReceiveService.sol";
 
diff --git a/helix-contract/contracts/ln/test/MockLayerZero.sol b/helix-contract/contracts/ln/test/MockLayerZero.sol
index e10de74b..d6e6cd46 100644
--- a/helix-contract/contracts/ln/test/MockLayerZero.sol
+++ b/helix-contract/contracts/ln/test/MockLayerZero.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "../messager/interface/ILayerZeroEndpoint.sol";
 
diff --git a/helix-contract/contracts/ln/test/TestToken.sol b/helix-contract/contracts/ln/test/TestToken.sol
index 4ffd51c4..c444876c 100644
--- a/helix-contract/contracts/ln/test/TestToken.sol
+++ b/helix-contract/contracts/ln/test/TestToken.sol
@@ -1,6 +1,5 @@
-
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "@zeppelin-solidity/contracts/token/ERC20/IERC20.sol";
 import "@zeppelin-solidity/contracts/utils/math/SafeMath.sol";
diff --git a/helix-contract/contracts/ln/tool/Create2Deployer.sol b/helix-contract/contracts/ln/tool/Create2Deployer.sol
index 3e65118c..39f9ae19 100644
--- a/helix-contract/contracts/ln/tool/Create2Deployer.sol
+++ b/helix-contract/contracts/ln/tool/Create2Deployer.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 contract Create2Deployer {
   event Deployed(address addr, uint256 salt);
diff --git a/helix-contract/contracts/ln/tool/ProxyAdmin.sol b/helix-contract/contracts/ln/tool/ProxyAdmin.sol
index 8df6b07b..013b8913 100644
--- a/helix-contract/contracts/ln/tool/ProxyAdmin.sol
+++ b/helix-contract/contracts/ln/tool/ProxyAdmin.sol
@@ -1,4 +1,4 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "@zeppelin-solidity/contracts/proxy/transparent/ProxyAdmin.sol";
diff --git a/helix-contract/contracts/ln/tool/TransparentUpgradeableProxy.sol b/helix-contract/contracts/ln/tool/TransparentUpgradeableProxy.sol
index 9f0fe26f..e2f58e45 100644
--- a/helix-contract/contracts/ln/tool/TransparentUpgradeableProxy.sol
+++ b/helix-contract/contracts/ln/tool/TransparentUpgradeableProxy.sol
@@ -1,4 +1,4 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.10;
+pragma solidity ^0.8.17;
 
 import "@zeppelin-solidity/contracts/proxy/transparent/TransparentUpgradeableProxy.sol";
diff --git a/helix-contract/hardhat.config.js b/helix-contract/hardhat.config.js
index ae40a8ab..ccc9e2ef 100644
--- a/helix-contract/hardhat.config.js
+++ b/helix-contract/hardhat.config.js
@@ -20,9 +20,9 @@ module.exports = {
   solidity: {
     compilers: [
       {
-        version: "0.8.10",
+        version: "0.8.17",
         settings: {
-          evmVersion: "istanbul",
+          evmVersion: "london",
           optimizer: {
             enabled: true,
             runs: 200
diff --git a/zksync-deployer/hardhat.config.ts b/zksync-deployer/hardhat.config.ts
index 2c6287ac..de4bb9cf 100644
--- a/zksync-deployer/hardhat.config.ts
+++ b/zksync-deployer/hardhat.config.ts
@@ -39,7 +39,7 @@ const config: HardhatUserConfig = {
     zkSyncTestnet,
   },
   solidity: {
-    version: "0.8.10",
+    version: "0.8.17",
   },
 };