# Network Upgrades

> History of Mina Protocol mainnet network upgrades (hard forks), including Berkeley and Mesa.

Canonical URL: https://docs.minaprotocol.com/network-upgrades/

Mina Protocol evolves through network upgrades (hard forks). Each upgrade introduces new protocol features, performance improvements, or governance changes. Hard forks are not backward compatible — all node operators must upgrade before the fork activates.

:::tip Mesa test network update

**Mesa Trail** is the current Mesa test network. The earlier preflight and MUT networks are [archived](/network-upgrades/mesa/archived-networks). See [Mesa Trail Network](/network-upgrades/mesa/mesa-trail) for the current build versions and upgrade path.

:::

| Upgrade | Status | Date | Key Changes |
|---------|--------|------|-------------|
| [Berkeley](/network-upgrades/berkeley/requirements) | Completed | June 2024 | zkApp programmability, recursive proofs, new transaction model, archive database migration |
| [Mesa](/network-upgrades/mesa/mesa-trail) | Testing on Mesa Trail | Mainnet date TBD | Transaction protocol v5.0.0, automode upgrades, simplified archive migration |