# Unichain Holocene Network Upgrade

> The testnet upgrade introduces Holocene Block Derivation, MIPS Contracts, and EIP-1559 Configurability.

**Published by:** [ETH Daily](https://ethdaily.io/)
**Published on:** 2024-12-04
**Categories:** unichain, uniswap, opstack
**URL:** https://ethdaily.io/unichain-holocene-network-upgrade

## Content

Unichain, Uniswap's DeFi-focused Layer 2 built on the OP Stack, is scheduled to activate the Holocene Network Upgrade on its testnet on December 18, 2024, at 22:00 UTC. The upgrade introduces Holocene Block Derivation, MIPS Contracts, and EIP-1559 Configurability, designed to improve functionality, performance, and scalability. The Holocene Block Derivation update simplifies the block derivation pipeline, optimizing worst-case performance for the Fault Proof System and improving cross-network interoperability. To ensure compatibility with the upgrade, node operators must update their op-node and op-geth software and properly configure the activation date. This story was featured in Episode 602.

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