# Architecture

Most of Prime Staked ETH's contracts are upgradeable via a well-known proxy wrapper and implementation contract. The architecture can be seen below. 

<figure><img src="https://4246464185-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlmyLnMMxdXp2GLoAHKda%2Fuploads%2FDSro0wsPwUOrbeD503sl%2FprimeBaseContracts.png?alt=media&#x26;token=92a2b7b6-b9a7-4391-8c77-9c5bd1562f19" alt=""><figcaption><p>primeETH contract dependencies</p></figcaption></figure>