[Standard] Hedera Mainnet & Testnet - Upgrade to Mirror Node v0.161.0

Scheduled for Aug 20, 00:00 - 04:00 UTC

Scheduled

We are upgrading our Hedera Mainnet and Testnet Mirror Node infrastructure to v0.161.0.

This release focuses on security hardening, including vulnerable dependency updates, tightened input validation, and socket read bounds. The `/api/v1/network/fees` REST API now conditionally reads either the legacy fee schedule (0.0.111) or the new simple fees schedule (0.0.113) depending on the requested timestamp.

During the maintenance window, brief interruptions to RPC availability may occur.

RPC Changes:
/api/v1/network/fees — Now conditionally serves the legacy fee schedule (0.0.111) or new simple fees schedule (0.0.113) based on the requested timestamp.

https://github.com/hiero-ledger/hiero-mirror-node/releases/tag/v0.161.0

Posted Aug 12, 2026 - 17:34 UTC

This scheduled maintenance affects: Hedera (Mainnet - JSON-RPC API, Mainnet - REST API, Testnet - JSON-RPC API, Testnet - REST API).