Upgrade Monad Testnet to v0.16.2

Scheduled Maintenance Report for Quicknode

In progress

Scheduled maintenance is currently in progress. We will provide updates as necessary.
Posted Sep 02, 2026 - 22:00 UTC

Update

Updating activity to Testnet only, at this time. Mainnet upgrade will be rolled out during a future maintenance window.
Posted Sep 02, 2026 - 21:28 UTC

Scheduled

We are upgrading our Monad Testnet infrastructure to v0.16.2

Highlights
- Raptorcast v1 publish — nodes now publish proposals in the v1 raptorcast wire format on both
the primary and secondary paths.
- JSON-RPC error codes corrected across eth_call, eth_estimateGas, eth_simulateV1,
debug_* and txpool_*.

Notable RPC/SDK changes
[RPC] Fix JSON-RPC error codes and messages returned by the call, simulate, debug, txpool and
websocket handlers.
Ref: monad-bft PR #3228
[RPC] Fix zero-fee eth_calls — a zero maxFeePerGas is no longer raised to the base fee,
matching geth and reth.
Ref: monad-bft PR #3164
[RPC] Fix EIP-1898 compatibility for BlockTagOrHash.
Ref: monad-bft PR #3163
[RPC] eth_createAccessList now accepts state overrides.
Ref: monad-bft PR #3179

Notable robustness changes
[Consensus] A validator publishes only the first accepted proposal to its full nodes, so an
equivocated proposal is no longer forwarded.
Ref: monad-bft PR #3180
[RPC] Concurrency limiter for eth_feeHistory, bounding memory on large block ranges.
Ref: monad-bft PR #3212
[EVM] Runloop fix for when the node resets to the start block number.
Ref: monad (execution) PR #2501

https://github.com/category-labs/monad-bft/releases/tag/v0.16.2
Posted Sep 02, 2026 - 21:08 UTC
This scheduled maintenance affects: Monad (Testnet — JSON-RPC API, Testnet — Websockets API, Testnet — Streams, Testnet — Webhooks, Mainnet - JSON-RPC API, Mainnet - Streams, Mainnet - Websockets API, Mainnet - Webhooks).