[Urgent] Monad Mainnet - Upgrade to v0.16.5

Scheduled for Oct 26, 00:00 - 23:59 UTC

Scheduled

We are upgrading our Monad Mainnet infrastructure to v0.16.5 on 2026-10-26. This release includes RPC improvements, robustness hardening, and triedb storage enhancements. Brief interruptions to RPC availability may occur on that date.

RPC Changes:
eth_simulateV1 — Empty full state overrides now zero the overridden account's storage, matching Geth behavior.
eth_simulateV1 — Enforces the configured maximum response size; oversized responses will fail gracefully.
eth_simulateV1 — Exits gracefully when a block state merge fails instead of terminating the request abnormally.
Triedb range query — Now validates prefix key length to prevent buffer over-reads.

https://github.com/category-labs/monad-bft/releases/tag/v0.16.5

Posted Oct 22, 2026 - 15:18 UTC

This scheduled maintenance affects: Monad (Monad - Mainnet).