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Flex | Sep. 10, 2025 
#  Flex no longer supports TLS v1.0 or 1.1 for assets.flex.twilio.com 
As of September 10, 2025, Twilio Flex no longer supports TLS v1.0 or v1.1 for the [assets.flex.twilio.com](https://assets.flex.twilio.com/docs/releases/flex-ui/latest/) endpoint, which hosts assets and SDK documentation related to Flex UI. If you try to connect to this endpoint using TLS v1.0 or v1.1, your request will fail. To make sure your request uses a supported protocol, use TLS v1.2 or later.
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