Scheduled: Polkadot Mainnet - Upgrade polkadot-sdk to stable2503-5, substrate-api-sidecar to v20.3.1

Scheduled for Jun 16, 00:00 - 01:00 UTC

Scheduled

We will be upgrading our polkadot nodes on Polkadot Mainnet to polkadot-sdk stable2503-5 and substrate-api-sidecar v20.3.1 on 2025-06-16 at 00:00 UTC

Please see detailed change log at https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2503-5 and https://github.com/paritytech/substrate-api-sidecar/releases/tag/v20.3.1

Posted Jun 12, 2025 - 07:14 UTC

This scheduled maintenance affects: Polkadot (Mainnet - JSON RPC API, Mainnet - Websockets API, Mainnet - substrate-api-sidecar).