This page will be kept updated with key information about the upgrade. As this upgrade is activated via a smart contract switch, no concrete activation time can be given.
- Celo Sepolia testnet activation is planned for Wed, Oct 22, 2025.
- Mainnet activation is planned for mid-November, 2025.
What is the Jello Hardfork?
The Jello Hardfork enables OP Succinct Lite, a production-ready, zero-knowledge-powered fault proof system built in collaboration with OP Labs and Succinct. Key benefits include:- ZK-powered dispute resolution, reducing latency, cost and complexity in the dispute process
- Improved infrastructure security through bond-based incentives and proof verification
- Support for alternative DA layers, aligning with Celo’s modular roadmap
For Node Operators
Node operators do not need to do any upgrades of the Celo client software for this Upgrade. We recommend the latest released versions:Docker ComposeThe required configuration for each service can be found in our Docker Compose Setup, where every network has a corresponding
<network>.env file.