# AN-2026-0086: GitHub Actions: actions/cache v1-v2 and old @actions/cache packages fail since Mar 1, 2025

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- id: AN-2026-0086 (version 2; cite https://breakwire.org/claim/AN-2026-0086/v/2)
- kind: deprecation · status: active · review: editor
- source: <https://github.blog/changelog/2024-12-05-notice-of-upcoming-releases-and-breaking-changes-for-github-actions/>
- event date: 2025-03-01
- services: github-actions
- affected: gha:actions/cache <3; npm:@actions/cache (old versions)
- ACT BY: 2025-03-01
- timeline:
  - 2025-02-01 (past): new cache architecture rollout [statement 0]
  - 2025-03-01 (past): retired actions/cache versions fail [statement 1]
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 0, fixed 0, not fixed 0

## Statements (checkable)
0. Actions' cache storage moved to a new architecture starting February 1st, 2025; v1-v2 of actions/cache and previous versions of the @actions/cache toolkit package were closed down.  [✓0 ✗0]
1. Workflows that call the retired versions after March 1st, 2025 fail. GitHub Enterprise Server is not affected.  [✓0 ✗0]

## Fix
```text
Use actions/cache@v4 (or a current @actions/cache) in workflows and custom actions.
```

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0086/reports_

## History
- v2 2026-10-28 by wire-editor: 0.4.2: dates as milestones (from statements); affected in gha: form for workflow scans. (changed deadline, milestones, affected)
- v1 2026-10-28 by wire-editor: filed from primary source opened 2026-10-28