diff --git a/contracts/script/upgrade/UpgradeArbT17683.s.sol b/contracts/script/upgrade/UpgradeArbT17683.s.sol
new file mode 100644
index 00000000..a183ec84
--- /dev/null
+++ b/contracts/script/upgrade/UpgradeArbT17683.s.sol
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.25;
+
+import { ProxyAdmin } from "@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol";
+import { ITransparentUpgradeableProxy } from "@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol";
+import { DeploymentUtils } from "../lib/DeploymentUtils.sol";
+import { T1ERC7683 } from "../../src/7683/T1ERC7683.sol";
+import { T1Constants } from "../../src/libraries/constants/T1Constants.sol";
+
+contract UpgradeArbT1ERC7683 is DeploymentUtils {
+    address internal ARB_T1_PROXY_ADMIN_ADDR = vm.envAddress("ARB_T1_PROXY_ADMIN_ADDR");
+    address internal AUCTION_WITNESS = vm.envAddress("AUCTION_WITNESS");
+    address internal ARB_T1_X_CHAIN_READ_PROXY_ADDR = vm.envOr("ARB_T1_X_CHAIN_READ_PROXY_ADDR", address(0));
+    address internal BASE_T1_7683_PROXY_ADDR = vm.envOr("BASE_T1_PULL_BASED_7683_PROXY_ADDR", address(0));
+    address internal ARB_T1_7683_PROXY_ADDR = vm.envOr("ARB_T1_PULL_BASED_7683_PROXY_ADDR", address(0));
+    uint32 internal immutable ARB =
+        uint32(IS_MAINNET ? T1Constants.ARBITRUM_MAINNET_CHAIN_ID : T1Constants.ARBITRUM_SEPOLIA_CHAIN_ID);
+    uint32 internal immutable BASE =
+        uint32(IS_MAINNET ? T1Constants.BASE_MAINNET_CHAIN_ID : T1Constants.BASE_SEPOLIA_CHAIN_ID);
+
+    ProxyAdmin private proxyAdmin;
+
+    function upgrade() external {
+        logStart("Upgrade T1ERC7683 on Arbitrum");
+        selectMainnetOrSepoliaFork("arbitrum");
+        startBroadcastWithDeployerKeyIfItExists();
+
+        proxyAdmin = ProxyAdmin(ARB_T1_PROXY_ADMIN_ADDR);
+
+        // Deploy new implementation
+        T1ERC7683 newImpl = new T1ERC7683(
+            address(0), // No Permit2 for now
+            ARB_T1_X_CHAIN_READ_PROXY_ADDR,
+            ARB
+        );
+
+        // Upgrade the existing proxy to the new implementation
+        proxyAdmin.upgrade(ITransparentUpgradeableProxy(ARB_T1_7683_PROXY_ADDR), address(newImpl));
+
+        vm.stopBroadcast();
+        logAddress("ARB_T1_PULL_BASED_7683_IMPLEMENTATION_ADDR", address(newImpl));
+        logAddress("ARB_T1_PULL_BASED_7683_PROXY_ADDR", ARB_T1_7683_PROXY_ADDR);
+        logEnd("Upgrade T1ERC7683 on Arbitrum");
+    }
+}
diff --git a/contracts/script/upgrade/UpgradeBaseT17683.s.sol b/contracts/script/upgrade/UpgradeBaseT17683.s.sol
new file mode 100644
index 00000000..a3dd6020
--- /dev/null
+++ b/contracts/script/upgrade/UpgradeBaseT17683.s.sol
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.25;
+
+import { ProxyAdmin } from "@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol";
+import { ITransparentUpgradeableProxy } from "@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol";
+
+import { DeploymentUtils } from "../lib/DeploymentUtils.sol";
+
+import { T1ERC7683 } from "../../src/7683/T1ERC7683.sol";
+import { T1Constants } from "../../src/libraries/constants/T1Constants.sol";
+
+contract UpgradeBaseT1ERC7683 is DeploymentUtils {
+    address internal BASE_T1_PROXY_ADMIN_ADDR = vm.envAddress("BASE_T1_PROXY_ADMIN_ADDR");
+    address internal AUCTION_WITNESS = vm.envAddress("AUCTION_WITNESS");
+
+    address internal BASE_T1_X_CHAIN_READ_PROXY_ADDR = vm.envOr("BASE_T1_X_CHAIN_READ_PROXY_ADDR", address(0));
+    address internal BASE_T1_7683_PROXY_ADDR = vm.envOr("BASE_T1_PULL_BASED_7683_PROXY_ADDR", address(0));
+    address internal ARB_T1_7683_PROXY_ADDR = vm.envOr("ARB_T1_PULL_BASED_7683_PROXY_ADDR", address(0));
+
+    uint32 internal immutable ARB =
+        uint32(IS_MAINNET ? T1Constants.ARBITRUM_MAINNET_CHAIN_ID : T1Constants.ARBITRUM_SEPOLIA_CHAIN_ID);
+    uint32 internal immutable BASE =
+        uint32(IS_MAINNET ? T1Constants.BASE_MAINNET_CHAIN_ID : T1Constants.BASE_SEPOLIA_CHAIN_ID);
+    ProxyAdmin private proxyAdmin;
+
+    function upgrade() external {
+        logStart("Upgrade T1ERC7683 on Base");
+        selectMainnetOrSepoliaFork("base");
+
+        startBroadcastWithDeployerKeyIfItExists();
+
+        proxyAdmin = ProxyAdmin(BASE_T1_PROXY_ADMIN_ADDR);
+
+        T1ERC7683 newImpl = new T1ERC7683(
+            address(0), // No Permit2 for now
+            BASE_T1_X_CHAIN_READ_PROXY_ADDR,
+            BASE
+        );
+
+        // Upgrade the existing proxy to the new implementation
+        proxyAdmin.upgrade(ITransparentUpgradeableProxy(BASE_T1_7683_PROXY_ADDR), address(newImpl));
+
+        vm.stopBroadcast();
+
+        logAddress("BASE_T1_PULL_BASED_7683_IMPLEMENTATION_ADDR", address(newImpl));
+        logAddress("BASE_T1_PULL_BASED_7683_PROXY_ADDR", BASE_T1_7683_PROXY_ADDR);
+        logEnd("Upgrade T1ERC7683 on Base");
+    }
+}