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This is a requirement for PCI. So I'm sure all integrations will cease to work with older TLS.

Not necessarily as PCI requires a minimum of TLS 1.1 with 1.2 being the recommended. [0]

[0]https://blog.pcisecuritystandards.org/are-you-ready-for-30-j...

No, they are definitely shutting off all TLS less than 1.2, it's required to keep PCI certification.

PCI requirements are TLS 1.1 minimum. Stripe's change is of course is due to PCI certification and 1.2 is strongly encouraged, but 1.2 is not the defacto version required. They could have just disabled 1.0 and keep 1.1. Just wanted to correct the info. (Also happy that they didn't take the minimum and took the extra effort to implement 1.2)

Source: https://blog.pcisecuritystandards.org/are-you-ready-for-30-j...

Are you sure about that? It would appear that the library will raise an APIConnectionError, which may in turn do so based on the return code from Stripe's API.