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🤖 I have created a release beep boop

9.19.0 (2026-11-02)

Breaking changes to the experimental async client

The async client is experimental, so these changes do not cause a major version bump. If you use AsyncLDClient with hooks or plugins, update your code:

• Remove the experimental AsyncHook class. The async client now uses the same synchronous Hook class as the sync client. Change each AsyncHook subclass to subclass Hook, and change its async def stages to def. The stages run on the event loop, so they must not block. (#548) (2457311)
• AsyncPlugin.get_hooks now returns a list of Hook instances. AsyncPlugin.register stays async. (#548) (2457311)

Features

• Accept synchronous hooks on the async client (#548) (2457311)

Bug Fixes

• Run after-evaluation hooks when an async evaluation is cancelled or raises (2457311)

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Note

Overview
Release 9.19.0 — bumps the package version from 9.18.4 to 9.19.0 in pyproject.toml, ldclient/version.py, .release-please-manifest.json, and the provenance verification example in PROVENANCE.md, and adds the 9.19.0 section to CHANGELOG.md.

What ships in this release (documented in the new changelog entry, not in this diff’s code):

The experimental async client unifies on the sync Hook API: AsyncHook is removed, AsyncPlugin.get_hooks returns Hook instances ( AsyncPlugin.register stays async), and the async client accepts synchronous hooks. Hook stage methods should be plain def (non-blocking on the event loop). A bug fix ensures after-evaluation hooks run when an async evaluation is cancelled or raises.

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[github-actions]

🤖 Created releases:

• 9.19.0

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