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v1.18.1 — June 21, 2026

This release focuses on Node HTTP adapter fixes, safer AxiosError serialisation, runtime/type correctness fixes, documentation updates, and dependency maintenance.

🐛 Bug Fixes

  • AxiosError Serialisation: Made AxiosError#cause non-enumerable to prevent circular JSON serialisation failures when errors include nested causes. (#10913)
  • Node HTTP Adapter: Guarded socket.setKeepAlive for proxy agent streams, accepted path-only URLs when socketPath is configured, deferred environment proxy handling to Node, and explicitly passed maxBodyLength through to follow-redirects. (#10917, [#10930], [#10942], [#10993])
  • Runtime and Type Correctness: Fixed several runtime crashes, type definition mismatches, and incorrect error handling paths. (#10959, [#11021])
  • AxiosURLSearchParams: Switched the encoder callback to an arrow function so encoder.call(this) receives the AxiosURLSearchParams instance correctly. (#11019)

🔧 Maintenance & Chores

  • Documentation: Documented sensitive headers and status transition behaviour, prepared cleaned-up docs, added Deno install instructions, and clarified that request data is request-specific (#11007, [#11010], [#11023], [#11025])

  • Dependencies: Bumped vite, rollup, form-data, js-yaml, and multer across the root project, docs, smoke tests, and module test workspaces. (#11011, [#11012], [#11013], [#11014], [#11015], [#11016], [#11017], [#11026])

🌟 New Contributors

We are thrilled to welcome our new contributors. Thank you for helping improve axios:

  • @webdevelopersrinu (#10913)
  • @sijie-Z (#10993)
  • @bartlomieju (#11023)
  • @JSap0914 (#11019)

Full Changelog

Source: README.md, updated 2026-06-21