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Accept: text/markdown header. For an index of Next.js documentation, see /docs/llms.txt.Upgrade Guides
Last updated October 2, 2026
Learn how to upgrade Next.js, with a coding agent or by following a version-specific guide:
Upgrade with a coding agent
Use a coding agent to upgrade and verify a Next.js app.
Codemods
Use codemods to upgrade your Next.js codebase when new features are released.
Version 14
Upgrade your Next.js Application from Version 13 to 14.
Version 15
Upgrade your Next.js Application from Version 14 to 15.
Version 16
Upgrade your Next.js Application from Version 15 to 16.
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