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3.38.0

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•Last updated Oct 22, 2026

Community-friendly bug fixes from the Event Handler, Parameters and Idempotency audits. Pick one, comment on the issue, and we'll assign it to you.

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Bug: routing and Response issues: unescaped route regex, regex strip_prefixes, gzip q=0, bytes JSON body, is_json() casing, missing Vary: Origin
aws-powertools/powertools-lambda-python#8580 · opened on Oct 18, 2026 · 3.38.0
3
fix(event_handler): fix prefix stripping, gzip negotiation, JSON detection and CORS Vary
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#8638 opened Oct 19, 2026 · Updated Oct 22, 2026
3
fix(logger): stop adding milliseconds twice when use_datetime_directive is set
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#8632 opened Oct 19, 2026 · Updated Oct 22, 2026
3
Bug: Logger timestamp is off by up to one second when use_datetime_directive=True
aws-powertools/powertools-lambda-python#8631 · opened on Oct 19, 2026 · 3.38.0
2