Webhook parser warns: Unknown value '2026-05-27.dahlia' for enum 'ApiVersion' in v1.0.0-rc.6

[eugeniudedin]

Describe the bug

I'm using async-stripe v1.0.0-rc.6 and receiving Stripe webhooks with:

"api_version": "2026-05-27.dahlia"

During webhook parsing I get the following warning:
WARN parse_payload: Unknown value '2026-05-27.dahlia' for enum 'ApiVersion'

However, v1.0.0-rc.6 appears to already contain support for this API version:
"2026-05-27.dahlia" => Ok(V2026_05_27_dahlia)

The webhook is still deserialized and processed, but the warning is unexpected.
Is this a bug in webhook deserialization, or is a different ApiVersion enum being used internally?

Versions:

• async-stripe-webhook: v1.0.0-rc.6

To Reproduce

Example payload fragment:
{
"api_version": "2026-05-27.dahlia",
"type": "invoice.paid"
}

Expected behavior

Webhook parsing should recognize API version "2026-05-27.dahlia" and not emit an "Unknown value" warning.

Code snippets

OS

Linux

Rust version

1.96.0

Library version

v1.0.0-rc.6

API version

2026-05-27.dahlia

Additional context

No response

[lukeh990]

I see the same issue.