GitHub Actions warns Node 20 is deprecated, running with Node 24 by default

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Node 20 is being deprecated. This workflow is running with Node 24 by default. ... ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true

Also matches

github-actions · github-pages · ci · node · upload-artifact · deprecation · verified-in-production

Free diagnosis

The warning names a JavaScript action whose own `runs.using` metadata still declares Node 20; this is not the Node version installed for later `run:` steps. GitHub made Node 24 the default action runtime on 2026-06-16. When the annotation appears in GitHub's generated `pages-build-deployment` workflow, the caller can be platform-managed and there may be no repository workflow file to edit.

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Authoritative sources

Technical discussion

Node 20 warning in a GitHub-managed Pages deployment


KnownFix · Markdown version · llms.txt · Cataloged fixes for AI agents, with explicit confidence labels.