onflow/flow-go v0.51.0

18th Aug 2026 - Height Coordinated Upgrade on Mainnet28 at Block Height 161738787

on GitHub

What's Changed

Cadence

• Update to Cadence v1.10.5 by @turbolent in #8604
• Update to Cadence v1.10.6 by @turbolent in #8658

CI/CD

• Reduce flakiness in unicast authorization tests by @janezpodhostnik in #8603
• Fix flaky ALSP manager tests by @janezpodhostnik in #8606
• Add default-branch-protection ruleset with FVM path-scoped review policy by @Kay-Zee in #8613
• fvm claude reviewer by @Kay-Zee in #8614
• Fix flaky GetScheduledTransaction test by pinning block heights per system collection version by @janezpodhostnik in #8616
• Pass custom linter binary to Lint jobs via artifact instead of cache by @janezpodhostnik in #8619
• Debug claude-review-fvm failures: full output + artifact upload by @janezpodhostnik in #8630

FlowEVM

• Upgrade to Ethereum Glamsterdam hard-fork by @m-Peter in #8554
• Discard state delta of invalid EVM transactions instead of committing it by @janezpodhostnik in #8658
• Fix pre-deployed COA creation in EVM by @janezpodhostnik in #8658

FVM

• Check minting account during token inspection by @janezpodhostnik in #8590
• Various cleanups by @turbolent in #8594
• Cleanup metering code by @janezpodhostnik in #8601
• Remove unused error return from MeteringResult by @janezpodhostnik in #8605
• Unify FVM limit exceeded errors into LimitExceededError by @janezpodhostnik in #8607
• Unify metering-disabled behavior for ledger interaction by @janezpodhostnik in #8610
• Update hardcoded mainnet execution effort weights to FLIP 370 values by @janezpodhostnik in #8622
• Implement native Account.balance reading from the canonical FlowToken vault by @janezpodhostnik in #8658
• Mark v0.51.0 as backward compatible w.r.t. Cadence by @vishalchangrani in #8658
• Programs cache metering fixes (cached inconsistencies, computation usage retention on failed transactions) by @janezpodhostnik in #8658

Storage

• Fix register lookup key owner parsing for addresses containing 0x2F by @janezpodhostnik in #8618

Storehouse

• 001 Part2 - Add payloadless trie test cases by @zhangchiqing in #8572
• 001 - Add payloadless node and trie implementation by @zhangchiqing in #8569
• Suggested amendments for PR #8569: [Storehouse] 001 - Add payloadless node and trie implementation by @AlexHentschel in #8599
• 001 - Part 2 Test cases by @zhangchiqing in #8609
• Handle all errors in RegisterStore.onBlockFinalized by @zhangchiqing in #8621

Testing

• fix flaky tests in verification fetcher chunk consumer by @zhangchiqing in #8588
• Fix flaky unit tests by @janezpodhostnik in #8626
• Fix data race in cluster-prefix RecordCache by @janezpodhostnik in #8627
• Add deterministic ALSP spam-decision boundary tests by @janezpodhostnik in #8628
• Restore exact EVM updated-register count assertion by @janezpodhostnik in #8629

Flow Core Contracts

• Upgrade flow-core-contracts to v1.10.4 by @janezpodhostnik in #8632

Rosetta support

• Remove code marked for removal in mainnet27 by @tim-barry in #8326

Update to Go 1.26

• Update to Go 1.26 by @turbolent in #8648

Crypto

• Fix BLS host functions panicking on non-BLS public keys by @janezpodhostnik in #8652
• Update to crypto v0.27.2 and flow-go-sdk v1.10.8 by @turbolent in #8654

Full Changelog: v0.50.0...v0.51.0