GitHub Actions Runtime Upgrade Conventions

Use this skill when editing GitHub Actions workflows to address deprecation warnings about action runtimes (for example Node.js runtime migrations).

Use This Skill When

• Workflow logs report an action is running on a deprecated runtime.
• You are upgrading action versions in .github/workflows/*.yml or .github/workflows/*.yaml.
• You need to keep existing workflow behavior while modernizing action dependencies.

Upgrade Rules

• Prefer upgrading to the latest stable major version of each action that is compatible with the workflow.
• Prefer immutable pins: resolve the target release to a full commit SHA and use that SHA in uses:.
• Do not pin to mutable tags or branches (for example @v4 or @main) in final recommendations.
• Upgrade one action at a time per commit (or one tightly related group) so failures are easy to isolate.
• Keep existing workflow behavior unchanged while upgrading runtime/dependency actions.

Actions We Track in This Repo