Upgrade transaction not shown on Etherscan

[malm0d]

When upgrading the implementation contract in a TransparentUpgradeableProxy, I noticed that there's no transaction recorded on Etherscan to show that the contract is upgraded. Is this an expected behavior? My contract was successfully upgraded nonetheless but was just wondering if I'm missing something.

import {Upgrades} from "lib/openzeppelin-foundry-upgrades/src/Upgrades.sol";
...

contract UpgradeStaking is Script {

    address stakingAddress;
    Staking stakingContract;

    function run() external {
        uint256 deployerPK = vm.envUint("PRIVATE_KEY");
        address deployer = vm.addr(deployerPK);

        vm.startBroadcast(deployerPK);
        console.log("Deployer Address:", deployer);

        stakingAddress = 0x557... ... ... ... 6E84;
        stakingContract = Staking(stakingAddress);

        Upgrades.upgradeProxy(stakingAddress, "Staking.sol", "");

        vm.stopBroadcast();
    }
}

[ericglau]

Since you are using a TransparentUpgradeableProxy, the upgrade transaction should be visible at its ProxyAdmin address on Etherscan.

You can find the ProxyAdmin address using getAdminAddress