Roadmap to becoming a developer in 2022
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# Upgrades
Smart contracts are immutable by default. Once they are created there is no way to alter them, effectively acting as an unbreakable contract among participants. However, for some scenarios, it is desirable to be able to modify them.
<ResourceGroupTitle>Free Content</ResourceGroupTitle>
<BadgeLink colorScheme='yellow' badgeText='Read' href='https://ethereum.org/en/developers/docs/smart-contracts/upgrading/'>Upgrading Ethereum contracts</BadgeLink>
<BadgeLink colorScheme='yellow' badgeText='Read' href='https://docs.openzeppelin.com/learn/upgrading-smart-contracts'>Upgrading smart contracts</BadgeLink>
<BadgeLink colorScheme='yellow' badgeText='Read' href='https://moralis.io/what-are-upgradable-smart-contracts-full-guide/'>What are Upgradable Smart Contracts? Full Guide</BadgeLink>
<BadgeLink badgeText='Watch' href='https://youtu.be/bdXJmWajZRY'>Upgrading your Smart Contracts | A Tutorial & Introduction</BadgeLink>