Namespace storage

.gitmodules

@@ -5,9 +5,7 @@
 	branch = v1.3.0
 [submodule "contracts/lib/openzeppelin-contracts"]
 	path = contracts/lib/openzeppelin-contracts
-	url = https://github.com/openzeppelin/openzeppelin-contracts
-[submodule "lib/openzeppelin-contracts"]
-	branch = v4.8.1
+	url = https://github.com/OpenZeppelin/openzeppelin-contracts
 [submodule "contracts/lib/subnet-evm"]
 	path = contracts/lib/subnet-evm
 	url = https://github.com/ava-labs/subnet-evm

CONTRIBUTING.md

@@ -2,7 +2,7 @@
 
 ## Setup
 
-To start developing on Teleporter, you'll need Solidity >= v0.8.18. [Foundry](https://book.getfoundry.sh/getting-started/installation) is the recommended development toolkit for working with Teleporter, and it comes bundled with the required Solidity version. To run the tests and linter locally, you'll need the dependencies described in [Setup](./README.md#setup), as well as [npm](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm)
+To start developing on Teleporter, you'll need Solidity >= v0.8.20. [Foundry](https://book.getfoundry.sh/getting-started/installation) is the recommended development toolkit for working with Teleporter, and it comes bundled with the required Solidity version. To run the tests and linter locally, you'll need the dependencies described in [Setup](./README.md#setup), as well as [npm](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm)
 
 ## Issues
 
@@ -13,7 +13,7 @@ To start developing on Teleporter, you'll need Solidity >= v0.8.18. [Foundry](ht
 ### Making an Issue
 
 - Check that the issue you're filing doesn't already exist by searching under [issues](https://github.com/ava-labs/teleporter/issues).
-- If you're unable to find an open issue addressing the problem, [open a new one](https://github.com/ava-labs/teleporter/issues/new/choose). Be sure to include a *title and clear description* with as much relevant information as possible.
+- If you're unable to find an open issue addressing the problem, [open a new one](https://github.com/ava-labs/teleporter/issues/new/choose). Be sure to include a _title and clear description_ with as much relevant information as possible.
 
 ## Features
 

contracts/foundry.toml

@@ -2,7 +2,7 @@
 src = 'src'
 out = 'out'
 libs = ['lib']
-solc_version = '0.8.18'
+solc_version = '0.8.20'
 test = 'tests'
 
 [fmt]

contracts/remappings.txt

@@ -1,6 +1,6 @@
 @avalabs/[email protected]/=lib/subnet-evm/contracts/
-@openzeppelin/contracts@4.8.1=lib/openzeppelin-contracts/contracts/
-@openzeppelin/contracts-upgradeable@4.9.6=lib/openzeppelin-contracts-upgradeable/contracts/
+@openzeppelin/contracts@5.0.2=lib/openzeppelin-contracts/contracts/
+@openzeppelin/contracts-upgradeable@5.0.2=lib/openzeppelin-contracts-upgradeable/contracts/
 @teleporter/=src/teleporter/
 @mocks/=src/mocks/
 @utilities/=src/utilities/

contracts/src/.solhint.json

@@ -1,41 +1,35 @@
 {
-    "extends": "solhint:recommended",
-    "rules": {
-        "compiler-version": [
-            "error",
-            "0.8.18"
-        ],
-        "no-unused-vars": "error",
-        "func-visibility": [
-            "error",
-            {
-                "ignoreConstructors": true
-            }
-        ],
-        "private-vars-leading-underscore": [
-            "warn",
-            {
-                "strict": true
-            }
-        ],
-        "reason-string": [
-            "warn",
-            {
-                "maxLength": 75
-            }
-        ],
-        "gas-custom-errors": "off",
-        "ordering": "error",
-        "immutable-vars-naming": [
-            "warn",
-            {
-                "immutablesAsConstants": false
-            }
-        ],
-        "func-named-parameters": [
-            "error",
-            5
-        ],
-        "one-contract-per-file": "off"
-    }
+  "extends": "solhint:recommended",
+  "rules": {
+    "compiler-version": ["error", "0.8.20"],
+    "no-unused-vars": "error",
+    "func-visibility": [
+      "error",
+      {
+        "ignoreConstructors": true
+      }
+    ],
+    "private-vars-leading-underscore": [
+      "warn",
+      {
+        "strict": true
+      }
+    ],
+    "reason-string": [
+      "warn",
+      {
+        "maxLength": 75
+      }
+    ],
+    "gas-custom-errors": "off",
+    "ordering": "error",
+    "immutable-vars-naming": [
+      "warn",
+      {
+        "immutablesAsConstants": false
+      }
+    ],
+    "func-named-parameters": ["error", 5],
+    "one-contract-per-file": "off"
+  }
 }

contracts/src/governance/ValidatorSetSig.sol

@@ -3,13 +3,13 @@
 
 // SPDX-License-Identifier: Ecosystem
 
-pragma solidity 0.8.18;
+pragma solidity 0.8.20;
 
 import {
     WarpMessage,
     IWarpMessenger
 } from "@avalabs/[email protected]/contracts/interfaces/IWarpMessenger.sol";
-import {ReentrancyGuard} from "@openzeppelin/contracts@4.8.1/security/ReentrancyGuard.sol";
+import {ReentrancyGuard} from "@openzeppelin/contracts@5.0.2/utils/ReentrancyGuard.sol";
 
 /**
  * THIS IS AN EXAMPLE CONTRACT THAT USES UN-AUDITED CODE.

contracts/src/governance/tests/ValidatorSetSigTests.t.sol

@@ -3,7 +3,7 @@
 
 // SPDX-License-Identifier: Ecosystem
 
-pragma solidity 0.8.18;
+pragma solidity 0.8.20;
 
 import {Test} from "forge-std/Test.sol";
 import {

contracts/src/mocks/ExampleERC20.sol

@@ -3,7 +3,7 @@
 
 // SPDX-License-Identifier: Ecosystem
 
-pragma solidity 0.8.18;
+pragma solidity 0.8.20;
 
 /**
  * THIS IS AN EXAMPLE CONTRACT THAT USES UN-AUDITED CODE.
@@ -13,7 +13,7 @@ pragma solidity 0.8.18;
 import {
     ERC20Burnable,
     ERC20
-} from "@openzeppelin/contracts@4.8.1/token/ERC20/extensions/ERC20Burnable.sol";
+} from "@openzeppelin/contracts@5.0.2/token/ERC20/extensions/ERC20Burnable.sol";
 
 contract ExampleERC20 is ERC20Burnable {
     string private constant _TOKEN_NAME = "Mock Token";

contracts/src/mocks/UnitTestMockERC20.sol

@@ -3,7 +3,7 @@
 
 // SPDX-License-Identifier: Ecosystem
 
-pragma solidity 0.8.18;
+pragma solidity 0.8.20;
 
 /**
  * THIS IS AN EXAMPLE CONTRACT THAT USES UN-AUDITED CODE.

contracts/src/teleporter/ITeleporterMessenger.sol

@@ -3,7 +3,7 @@
 
 // SPDX-License-Identifier: Ecosystem
 
-pragma solidity 0.8.18;
+pragma solidity 0.8.20;
 
 // A message receipt identifies the message that was delivered by its nonce,
 // and the address that can redeem the reward for that message.

contracts/src/teleporter/ITeleporterReceiver.sol

@@ -3,7 +3,7 @@
 
 // SPDX-License-Identifier: Ecosystem
 
-pragma solidity 0.8.18;
+pragma solidity 0.8.20;
 
 /**
  * @dev Interface that cross-chain applications must implement to receive messages from Teleporter.

contracts/src/teleporter/ReceiptQueue.sol

@@ -3,9 +3,9 @@
 
 // SPDX-License-Identifier: Ecosystem
 
-pragma solidity 0.8.18;
+pragma solidity 0.8.20;
 
-import {Math} from "@openzeppelin/contracts@4.8.1/utils/math/Math.sol";
+import {Math} from "@openzeppelin/contracts@5.0.2/utils/math/Math.sol";
 import {TeleporterMessageReceipt} from "./ITeleporterMessenger.sol";
 
 /**

contracts/src/teleporter/TeleporterMessenger.sol

@@ -3,10 +3,10 @@
 
 // SPDX-License-Identifier: Ecosystem
 
-pragma solidity 0.8.18;
+pragma solidity 0.8.20;
 
-import {IERC20} from "@openzeppelin/contracts@4.8.1/token/ERC20/IERC20.sol";
-import {SafeERC20} from "@openzeppelin/contracts@4.8.1/token/ERC20/utils/SafeERC20.sol";
+import {IERC20} from "@openzeppelin/contracts@5.0.2/token/ERC20/IERC20.sol";
+import {SafeERC20} from "@openzeppelin/contracts@5.0.2/token/ERC20/utils/SafeERC20.sol";
 import {
     WarpMessage,
     IWarpMessenger
@@ -424,9 +424,8 @@ contract TeleporterMessenger is ITeleporterMessenger, ReentrancyGuards {
         bytes32 blockchainID_ = blockchainID;
 
         // Iterate through the specified message IDs and create teleporter receipts to send back.
-        TeleporterMessageReceipt[] memory receiptsToSend = new TeleporterMessageReceipt[](
-                messageIDs.length
-            );
+        TeleporterMessageReceipt[] memory receiptsToSend =
+            new TeleporterMessageReceipt[](messageIDs.length);
         uint256 length = messageIDs.length;
         for (uint256 i; i < length; ++i) {
             bytes32 receivedMessageID = messageIDs[i];

contracts/src/teleporter/registry/TeleporterOwnerUpgradeable.sol

@@ -3,11 +3,11 @@
 
 // SPDX-License-Identifier: Ecosystem
 
-pragma solidity 0.8.18;
+pragma solidity 0.8.20;
 
 import {TeleporterUpgradeable} from "./TeleporterUpgradeable.sol";
 import {OwnableUpgradeable} from
-    "@openzeppelin/contracts-upgradeable@4.9.6/access/OwnableUpgradeable.sol";
+    "@openzeppelin/contracts-upgradeable@5.0.2/access/OwnableUpgradeable.sol";
 
 /**
  * @dev Contract that inherits {TeleporterUpgradeable} and allows
@@ -22,10 +22,12 @@ abstract contract TeleporterOwnerUpgradeable is TeleporterUpgradeable, OwnableUp
         address initialOwner
     ) internal onlyInitializing {
         __TeleporterUpgradeable_init(teleporterRegistryAddress);
-        __Ownable_init();
-        transferOwnership(initialOwner);
+        __Ownable_init_unchained(initialOwner);
     }
 
+    // solhint-disable-next-line func-name-mixedcase, no-empty-blocks, func-name-mixedcase
+    function _TeleporterOwnerUpgradeable_init_unchained() internal onlyInitializing {}
+
     /**
      * @dev See {TeleporterUpgradeable-_checkTeleporterUpgradeAccess}
      *

contracts/src/teleporter/registry/TeleporterRegistry.sol

@@ -3,7 +3,7 @@
 
 // SPDX-License-Identifier: Ecosystem
 
-pragma solidity 0.8.18;
+pragma solidity 0.8.20;
 
 import {ITeleporterMessenger} from "@teleporter/ITeleporterMessenger.sol";
 import {