Apply this skill when dependency versions, lockfiles, package manager metadata, security advisory fixes, vulnerability scanner alerts, generated dependency outputs, runtime engine constraints, Python runtime support, peer dependency contracts, framework plugins, dev servers, test runners, TypeScript compiler tracks, CI actions, Docker base images, or toolchain versions are upgraded, downgraded, pinned, widened, regenerated, reviewed, or reported.
Installation
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Review dependency upgrades as runtime, build, security, package, and generated-output contract changes rather than as version-number edits.
Use When
A dependency version is upgraded, downgraded, pinned, unpinned, widened, narrowed, replaced, or removed.
A lockfile, package manager metadata, workspace constraint, runtime engine, peer dependency, optional dependency, feature flag, or generated dependency output changes.
A security advisory, vulnerability scanner, Dependabot, Renovate, package audit, language audit, CI action update, Docker base image update, framework plugin update, formatter/linter/bundler update, ORM update, code generator update, protobuf/OpenAPI generator update, or toolchain update is reviewed or applied.
A task claims a dependency change is "only patch", "only devDependency", "safe minor", "security-only", "transitive only", "lockfile only", or "no runtime change".
A dependency update touches installation, publish output, generated clients, SDKs, native binaries, browser bundles, serverless or edge runtime, ESM/CJS/module format, Python markers, Go module graph, Cargo features, JVM dependency mediation, .NET target frameworks, Ruby/PHP/Swift lockfiles, Docker images, or CI actions.
A Python runtime support floor, CI matrix, container image, requires-python, standard-library feature expectation, or security-default expectation changes as part of an upgrade.
A TypeScript upgrade touches TypeScript 6 transition deprecations, TS6 JavaScript API compatibility, TypeScript 7 stable compiler adoption, typescript@next development comparison, native-preview comparison, @typescript/typescript6, tsc6, typescript, @typescript/native-preview, tsgo, compiler API consumers, declaration emit, framework typecheck wrappers, or editor language-service behavior.
Do Not Use When
A brand-new dependency is proposed without upgrading an existing declaration; use dependency-reality-check first.
Code imports or invokes an existing dependency but no dependency metadata, lockfile, runtime version, generated output, or package-manager contract changes.
The task only updates prose that mentions a dependency and does not assert supported versions, install commands, runtime behavior, security status, or package metadata.
Required Inputs
The dependency or tool being changed, old version or range, new version or range, direct or transitive status, and reason for the change.
Ecosystem and package manager: JavaScript or TypeScript, Python, Go, Rust, JVM, .NET, Ruby, PHP, Swift, Docker, CI actions, or another declared system.
Release notes, migration notes, changelog, advisory range, fixed range, compatibility notes, or local issue evidence when available from approved context.
Advisory exploit preconditions, including operating system, host binding, public network exposure, dev-server mode, privileged UI/API flags, protocol peer role, unauthenticated reachability, and whether the affected package runs in production, CI, development, containers, or remote workspaces.
Impacted runtime paths, build paths, test paths, generated clients, mocks, fixtures, docs examples, deployment images, and package publish output.
Preconditions
The task matches the Use When conditions and does not match the Do Not Use When exclusions.
Higher-priority instructions and .mustflow/config/commands.toml have been checked for the current scope.
The upgrade is classified before editing as patch, minor, major, pre-1.0, security fix, transitive-only, toolchain-only, generated-output, runtime-engine, CI-image, or broad refresh.
Allowed Edits
Align dependency declarations, lockfiles, generated outputs, compatibility code, tests, docs, and package metadata that are directly required by the upgrade.
Prefer the minimum version change that satisfies the feature or advisory.
Keep unrelated modernization, formatting churn, dependency family refreshes, and broad package-manager rewrites out of a narrow upgrade.
Do not delete and recreate lockfiles to hide the dependency graph change.
Do not weaken tests, scanners, coverage gates, type checks, peer warnings, engine checks, or generated-output assertions to make an upgrade pass.
Procedure
Name the upgrade and classify it: direct or transitive, runtime or development, patch/minor/major/pre-1.0/security/toolchain/generated/CI-image, and narrow or broad.
Identify the ecosystem and read the matching declaration surfaces.
Docker and CI: base image tags or digests, action versions, setup-tool versions, cache keys, matrix versions, deployment image metadata, and runtime smoke surfaces.
Build a dependency ledger before editing: old version, new version, direct or transitive path, source registry or image source, lockfile entry, integrity or checksum, engine or platform requirement, peer or feature changes, optional or platform-specific packages, and generated-output changes.
For patch upgrades, verify that the patch does not change runtime defaults, parser strictness, security behavior, peer requirements, engine support, native binaries, module format, generated output, or install scripts.
For minor upgrades, read release notes or migration notes when available. Check new defaults, deprecations, peer and engine changes, plugin compatibility, generated output, bundle size, runtime adapter behavior, and framework integration behavior.
For major upgrades, treat the change as a migration. Require migration notes, public API change classification, config schema review, CLI flag review, plugin API review, codemod or manual migration notes, full caller review, rollback plan, and broad verification.
For pre-1.0 or calendar-versioned packages, do not trust SemVer labels. Classify risk by actual contract changes and release notes.
For security upgrades, keep the patch narrow. Identify advisory id, affected range, fixed range, direct or transitive path, exploit-relevant code path, minimum patched version, scanner recheck, and whether stricter validation, escaping, TLS, redirect, auth, or parser behavior can break callers.
Build one root-cause ledger keyed by advisory identity, ecosystem, package, resolved version, and manifest. Treat reports from Dependabot, OSV, CodeQL, Scorecard, or another detector as corroborating signals when they identify the same vulnerable graph or workflow reference; do not inflate duplicate detector records into separate vulnerabilities or discard the extra detector coverage.
For lockfile-only or transitive vulnerability alerts, do not treat the lockfile line as the root cause. Trace the vulnerable package back to the direct dependency or framework plugin that resolves it, then update the narrowest parent version, override, or package-manager resolution that satisfies the fixed range.
After regenerating the lockfile, confirm the old vulnerable version is absent from the resolved graph and that any override is recorded in the manifest rather than hidden as unexplained lockfile churn. Treat local graph proof and remote alert closure as separate evidence: require a same-ref scanner rerun or current registry alert state before claiming the remote alert is closed.
For devDependency advisories, decide whether the affected tool ever binds to a non-localhost host, runs in a container with published ports, serves worktree files, exposes a browser or test UI, accepts remote API tokens, writes source or snapshot files, reruns tests, or executes project code. A devDependency can still be security-sensitive when it is reachable from another machine or CI/preview surface.
For protocol and crypto dependency advisories, classify whether the package acts as client, server, agent, parser, verifier, or keyring. Check unauthenticated reachability, panic or assertion behavior, attacker-controlled key sizes, packet or frame ordering, unsolicited responses, and resource exhaustion before reducing the finding to "DoS only".
Review the lockfile as a graph, not a blob. Check direct and transitive replacements, newly introduced packages, removed packages, optional/platform packages, source URLs, integrity or checksum changes, peer resolution, engine requirements, native prebuilds, and postinstall or lifecycle scripts.
Review runtime boundaries that dependency upgrades commonly break: ESM/CJS and package type, exports and conditional exports, browser/node/edge conditions, Node engine support, Python dependency markers and extras, Go module path changes, Cargo feature unification, native builds, SSR/client split, WebView/native split, and generated client or SDK types.
Treat framework, plugin, code generator, formatter, linter, bundler, ORM, protobuf, OpenAPI, GraphQL, database driver, dev-server, browser-test, and test-runner upgrades as behavior changes when their output, config schema, plugin API, CLI flags, file-serving policy, privileged UI gates, or generated code can change.
For Python runtime upgrades, treat requires-python, CI matrices, base images, dependency markers, wheels, packaging output, standard-library API availability, and security-default changes as one compatibility contract. Review version-gated standard-library usage and changed defaults before assuming the upgrade is only a dependency resolution change.
For Python upgrades that adopt newer standard-library behavior, call out affected paths such as archive extraction, subprocess handling, async lifecycle, import/resource loading, typing surfaces, data-class shapes, and diagnostic flags. Keep fallbacks or compatibility wording when the repository still supports older interpreters.
For TypeScript upgrades, refresh official release and registry evidence before classifying the
compiler track. In the snapshot checked on 2026-07-11, TS7 stable used typescript and
tsc, TS6 JavaScript API compatibility used @typescript/typescript6 and tsc6,
development builds used typescript@next, native preview used
@typescript/native-preview and tsgo, and typescript@rc was historical prerelease
evidence. Reclassify those tags when current registry metadata changes; never treat development
or preview packages as stable replacements merely because they are newer.
For TypeScript 6, review deprecations as TypeScript 7 removal risks. For TS7 stable, review compiler parity, declaration emit, watch/incremental, generated-output, and framework wrapper risks. Use typescript@next or tsgo only as optional comparison paths. Keep compiler API, transformer, ESLint, language-service plugin, and framework wrapper consumers on the TS6 API compatibility track until their owners explicitly support the TS7 API surface.
For new dependencies introduced by the upgrade, invoke the dependency-reality-check decision path: license, maintainer risk, provenance, lifecycle scripts, binary downloads, package age, transitive size, supply-chain risk, and replacement path.
For Docker base images and CI actions, review them as dependencies. Check image/action source, version pinning policy, digest use when required, runtime version changes, security patch reason, cache impact, and deployment smoke coverage. Pin third-party GitHub Actions to the verified full commit SHA, retain the reviewed release or channel as a comment, and record tag-to-commit evidence; a mutable rolling tag or branch is not an immutable dependency merely because the owner is trusted.
Select verification from the command contract based on risk. Patch and narrow transitive changes can use focused checks when they cover the touched path; major, framework, runtime-engine, generated-output, security-sensitive, Docker, CI-action, Python runtime, or TypeScript compiler-track updates need broader checks.
Report skipped checks explicitly. If the command contract lacks a dependency graph, package verification, Python runtime matrix, TypeScript declaration, or compiler-comparison intent, do not invent raw package-manager commands; report the missing configured intent.
Postconditions
The final state shows exactly which dependency contract changed and why.
The lockfile and declaration files agree.
Direct and transitive changes are understood, not hidden behind lockfile volume.
Runtime engine, peer dependency, optional/platform package, feature, module-format, generated-output, and publish-surface risks are classified.
TypeScript compiler-track changes distinguish TS7 stable compiler adoption, TS6 JavaScript API compatibility, typescript@next development comparison, native-preview comparison, and historical prerelease evidence.
Security fixes are narrow unless the user explicitly accepted a broader modernization.
Advisory exploit preconditions are checked against local scripts, config, CI, containers, remote workspaces, and docs before an alert is dismissed as development-only or unreachable.
Tests and scanners were not weakened to pass the upgrade.
Verification
Use configured oneshot command intents when available:
changes_status
changes_diff_summary
lint
build
test_related
test
docs_validate_fast
test_release
mustflow_check
Prefer the narrowest configured intent that proves the actual upgraded dependency path. Use broader verification for major upgrades, runtime or framework upgrades, security-sensitive dependencies, generated-output changes, publish-surface changes, Docker image changes, CI action changes, and package-manager behavior changes.
Failure Handling
If release notes, advisory range, fixed range, or migration guidance are missing, mark the upgrade as higher risk instead of calling it safe.
If a lockfile diff introduces unrelated dependency churn, split the change or explain why the graph update is necessary.
If peer dependency, engine, optional dependency, native build, or platform warnings appear, resolve or report them. Do not dismiss them because the local machine passed.
If tests fail after an upgrade, do not delete tests, skip tests, loosen assertions, lower coverage, disable scanners, or widen permissions unless the behavior contract intentionally changed and the report says so.
If a security upgrade requires broad modernization, split the minimum patch from the modernization when possible.
If generated output changes, regenerate from the official generator path and explain the generated diff. Do not hand-edit generated dependency output.
If typescript@next or native-preview verification is introduced, keep the repository's adopted stable compiler, TS6 API compatibility, and framework verification unless the repository explicitly adopts the new track and all compiler API, framework wrapper, declaration, and generated-output risks are covered.
If configured verification is missing, report the missing command intent instead of inferring a package-manager command.
Output Format
Dependency upgraded and reason
Ecosystem and package manager surface inspected
Direct and transitive graph changes
Compatibility classification: patch, minor, major, pre-1.0, security, toolchain, generated-output, Docker, or CI action
Runtime, peer, engine, module, feature, platform, generated-output, and publish-surface risks
Python runtime, standard-library, packaging, and changed-default risks when relevant
TypeScript compiler-track, RC, nightly, and API compatibility risks when relevant
Security advisory and fixed-range notes when relevant
Exploit preconditions, dev-server exposure, protocol role, and scanner recheck notes when relevant
