Aptos Labs today published the v1.49.1 hot‑fix release for its mainnet node software. The update is a consolidation of several incremental changes that enhance performance, security, and developer experience.
The most visible change is the bump of the gas schedule to version 49. This upgrade adjusts the cost model for transaction execution, aligning it with the latest protocol economics and ensuring that node operators and developers have a consistent reference for fee estimation.
Beyond the gas schedule, the release contains a suite of bug fixes and feature enhancements. The move‑prover module now correctly handles quantifier weights, state‑label witnesses, and filtered‑environment logic, reducing the risk of verification errors. Storage improvements allow databases to open concurrently through thread::scope, improving startup times and reducing contention.
Security and reliability were also a focus. The safety paper, which documents the protocol’s formal verification and safety properties, has received its final pass and includes new sections on reentrancy checks and performance experiments. Additionally, the executor benchmark now outputs feedback, giving operators clearer insight into node performance.
Other notable changes include support for enums in the Mono‑VM, the addition of a native_position framework module for trading, and updates to the Forge etna test harness to use a more realistic 500‑transactions‑per‑second workload.
For node operators, the v1.49.1 release means a more stable and secure node with updated fee structures. Developers will benefit from clearer gas pricing and improved prover reliability, while the completed safety paper provides further confidence in the protocol’s robustness.
Aptos Labs encourages all participants to upgrade to v1.49.1 to take advantage of these improvements and maintain alignment with the mainnet’s evolving standards.