> This page is for SDKs, version Legacy.
> For other versions, use one of these documentation indexes:
> - Current (default): https://buildwithfern.com/learn/sdks/current/llms.txt
> - Legacy: https://buildwithfern.com/learn/sdks/legacy/llms.txt

> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt.

## 5.9.0

**`(feat):`** Add `retryStatusCodes` config with `"legacy"` and `"recommended"` modes. Legacy (default)
preserves current behavior (408, 409, 429, >= 500). Recommended retries only transient
codes (408, 409, 429, 502, 503, 504), avoiding idempotency issues with 500. A 6.0.0
migration auto-pins legacy for upgrading users.

## 5.8.4

**`(chore):`** Bump @fern-api/generator-cli to 0.9.21, which includes @fern-api/replay
0.14.0 with fixes for silent customization loss across apply and resolve
paths, per-patch-region diff, and clean follow-up patch preservation.