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Deprecated

v2026-02-01 Deprecation

about 4 hours ago by Gusto Developer Relations

With the release of v2026-06-15—which is stabilized as of today, June 16, 2026—v2026-02-01 has entered the year-long deprecation process effective June 15, 2026.

v2026-02-01 will move through these deprecation phases:

  • Full Support (June 15, 2026—November 15, 2026), continuing to receive bug fixes, security patches, and new features where applicable
  • Limited Support November 15, 2026—June 15, 2027). The API version will remain functional, but will only receive critical security fixes

After June 15, 2027,v2026-02-01 will be fully retired and unusable.

If your API request header specifies a version older than the oldest supported version—any version older than v2025-06-15—your API request will return a 406 Not Acceptable error. If no version is specified in the request header, your API request will default to the Minimum API Version listed in our Developer Portal.

For more details on all API updates, including new version releases and version deprecation timelines, visit our Version upgrade guide and API versioning guide.