Scheduled
We are upgrading our OP Stack node components across the following networks: B3, Cyber, Ink, Lisk, Mode, Optimism, Unichain, and Zora.
During the maintenance window, brief interruptions to RPC availability may occur. This release includes bug fixes, engine controller improvements, and Karst hardfork groundwork and has no user-facing RPC changes.
https://github.com/ethereum-optimism/optimism/releases/tag/op-node%2Fv1.17.0
https://github.com/ethereum-optimism/optimism/releases/tag/op-reth%2Fv2.2.0
Posted Apr 30, 2026 - 14:19 UTC
This scheduled maintenance affects: Optimism (Mainnet — JSON-RPC API, Mainnet — Websockets API, Mainnet — Webhooks, Mainnet — Streams, Sepolia - JSON RPC, Sepolia - Websockets API, Sepolia — Webhooks, Sepolia — Streams), Cyber (Mainnet - JSON-RPC API, Mainnet - Websockets API, Mainnet — Streams, Mainnet — Webhooks, Sepolia — JSON-RPC API, Sepolia — Websockets API, Sepolia — Streams, Sepolia — Webhooks), Mode (Select Access) (Mainnet — JSON-RPC API, Mainnet — Websockets API, Mainnet — Streams, Mainnet — Webhooks), Zora (Select Access) (Mainnet — JSON-RPC API, Mainnet — Websockets API, Mainnet — Streams, Mainnet — Webhooks), B3 (Mainnet — JSON-RPC API, Mainnet — WebSocket API, Mainnet — Streams, Mainnet — Webhooks), Ink (Beta) (Mainnet — JSON-RPC API, Mainnet — Websockets API, Mainnet — Streams, Mainnet — Webhooks, Sepolia — JSON-RPC API, Sepolia — Websockets API, Sepolia — Streams, Sepolia — Webhooks), Lisk (Select Access) (Mainnet — JSON-RPC API, Mainnet — Websockets API, Mainnet — Streams, Mainnet — Webhooks), and Unichain (Beta) (Mainnet — JSON-RPC API, Mainnet — Streams, Mainnet – Websockets API, Mainnet — Webhooks, Sepolia — JSON-RPC API, Sepolia – Websockets API, Sepolia — Streams, Sepolia — Webhooks).