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fern-support merged 1 commit into from
Apr 20, 2026
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Update changelogs from fern repo #5009

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9 changes: 9 additions & 0 deletions fern/products/sdks/generators/python/changelog/2026-04-20.mdx
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## 5.5.5
**`(fix):`** Raise the generated `aiohttp` optional-dependency lower bound from
`>=3.10.0,<4` to `>=3.13.4,<4` and add a `python = ">=3.9"` marker on
both `aiohttp` and `httpx-aiohttp` so the aiohttp extra is only installed
on Python 3.9+ while still allowing the SDK itself to support Python 3.8.
Enforces the patched minimum version for GHSA-c427-h43c-vf67
(CVE-2026-34525) at the dependency spec level.


## 5.5.4
**`(fix):`** Clamp the minimum Python version produced by the generator to ^3.10. Python 3.8 reached EOL in Oct 2024 and Python 3.9 in Oct 2025; many popular PyPI packages (e.g. `requests` >=2.33) no longer publish wheels for those versions, which causes dependency resolution to pin older, known-vulnerable releases (GHSA-gc5v-m9x4-r6x2 / CVE-2026-25645). When `pyproject_python_version` specifies a range that allows a version older than 3.10, the generator now logs a warning and emits `python = "^3.10"` in the generated `pyproject.toml`.

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