v19.6.0

This release changes the pinned API version to 2026-08-26.dahlia.

• #1923 Support discriminated unions in the V2 runtime

  • Adds support for discriminated union (polymorphic) parameters and response fields in the V2 runtime.
  • Serializing a discriminated union parameter whose discriminator is missing, or not a String or Symbol, raises ArgumentError rather than sending the value uncoerced. Callers building a union parameter as a plain Hash must include the discriminator.
  • Adds nullable field encoding support, so int64_string and decimal_string fields wrapped in a nullable coerce correctly.

• #1937 Add new EventNotificationHandler class for better thin event management

  • We've been putting a lot of time into rethinking the event handling experience in the SDKs. This new class is the culmination of that effort.
  • They're designed for a tight coupling with both StripeClient and the fully-typed nature of thin events. This delivers painless event destination upgrades, in-editor checks for common mistakes, and better code modularity.
  • Now that we've released thin event notifications for v1 objects, these new handlers are our recommended path for all integrations using thin event notifications.
  • See more detailed docs here: https://docs.stripe.com/webhooks/event-notification-handlers

• #1926 Extract V2TypeCoercion module for bidirectional field encoding

  • Fixes V2 int64_string response fields so they return Integer (to match the field's Sorbet type) instead of String

• #1934 Update generated code

  • Add support for new resource Billing::FeedbackOption
  • Add support for create, deactivate, list, retrieve, and update methods on resource Billing::FeedbackOption
  • Add support for payment_method_settings on AccountSession::Component and AccountSessionCreateParams::Component
  • Add support for feedback_options on BillingPortal::Configuration::Feature::SubscriptionCancel::CancellationReason, BillingPortal::ConfigurationCreateParams::Feature::SubscriptionCancel::CancellationReason, and BillingPortal::ConfigurationUpdateParams::Feature::SubscriptionCancel::CancellationReason
  • Add support for customer_update on BillingPortal::Session::Flow
  • Add support for funding_source_group on Charge::PaymentMethodDetail::Card::Wallet::Link and Charge::PaymentMethodDetail::Link
  • Add support for funding_types_blocked on Checkout::Session::PaymentMethodOption::Card::Restriction and Checkout::SessionCreateParams::PaymentMethodOption::Card::Restriction
  • Add support for metadata on ConfirmationToken
  • Add support for active_entitlements and customer_portal on CustomerSession::Component and CustomerSessionCreateParams::Component
  • Add support for country on FinancialConnections::Session::Filter
  • Add support for frozen_fields on InvoiceItem
  • Add support for billie on Invoice::PaymentSetting::PaymentMethodOption, InvoiceCreateParams::PaymentSetting::PaymentMethodOption, InvoiceUpdateParams::PaymentSetting::PaymentMethodOption, Subscription::PaymentSetting::PaymentMethodOption, SubscriptionCreateParams::PaymentSetting::PaymentMethodOption, and SubscriptionUpdateParams::PaymentSetting::PaymentMethodOption
  • ⚠️ Remove support for cryptogram on PaymentAttemptRecord::PaymentMethodDetail::Card::ThreeDSecure and PaymentRecord::PaymentMethodDetail::Card::ThreeDSecure
  • Change PaymentIntent.allowed_payment_method_types and SetupIntent.allowed_payment_method_types to be required
  • Add support for application_fee_amount, application_fee_percent, on_behalf_of, and transfer_data on PaymentLinkUpdateParams
  • Add support for feedback_option on Subscription::CancellationDetail, SubscriptionCancelParams::CancellationDetail, and SubscriptionUpdateParams::CancellationDetail
  • Add support for igic on Tax::Registration::CountryOption::At, Tax::Registration::CountryOption::Be, Tax::Registration::CountryOption::Bg, Tax::Registration::CountryOption::Cy, Tax::Registration::CountryOption::Cz, Tax::Registration::CountryOption::De, Tax::Registration::CountryOption::Dk, Tax::Registration::CountryOption::E, Tax::Registration::CountryOption::Ee, Tax::Registration::CountryOption::Fi, Tax::Registration::CountryOption::Fr, Tax::Registration::CountryOption::Gr, Tax::Registration::CountryOption::Hr, Tax::Registration::CountryOption::Hu, Tax::Registration::CountryOption::Ie, Tax::Registration::CountryOption::It, Tax::Registration::CountryOption::Lt, Tax::Registration::CountryOption::Lu, Tax::Registration::CountryOption::Lv, Tax::Registration::CountryOption::Mt, Tax::Registration::CountryOption::Nl, Tax::Registration::CountryOption::Pl, Tax::Registration::CountryOption::Pt, Tax::Registration::CountryOption::Ro, Tax::Registration::CountryOption::Se, Tax::Registration::CountryOption::Si, Tax::Registration::CountryOption::Sk, Tax::RegistrationCreateParams::CountryOption::At, Tax::RegistrationCreateParams::CountryOption::Be, Tax::RegistrationCreateParams::CountryOption::Bg, Tax::RegistrationCreateParams::CountryOption::Cy, Tax::RegistrationCreateParams::CountryOption::Cz, Tax::RegistrationCreateParams::CountryOption::De, Tax::RegistrationCreateParams::CountryOption::Dk, Tax::RegistrationCreateParams::CountryOption::E, Tax::RegistrationCreateParams::CountryOption::Ee, Tax::RegistrationCreateParams::CountryOption::Fi, Tax::RegistrationCreateParams::CountryOption::Fr, Tax::RegistrationCreateParams::CountryOption::Gr, Tax::RegistrationCreateParams::CountryOption::Hr, Tax::RegistrationCreateParams::CountryOption::Hu, Tax::RegistrationCreateParams::CountryOption::Ie, Tax::RegistrationCreateParams::CountryOption::It, Tax::RegistrationCreateParams::CountryOption::Lt, Tax::RegistrationCreateParams::CountryOption::Lu, Tax::RegistrationCreateParams::CountryOption::Lv, Tax::RegistrationCreateParams::CountryOption::Mt, Tax::RegistrationCreateParams::CountryOption::Nl, Tax::RegistrationCreateParams::CountryOption::Pl, Tax::RegistrationCreateParams::CountryOption::Pt, Tax::RegistrationCreateParams::CountryOption::Ro, Tax::RegistrationCreateParams::CountryOption::Se, Tax::RegistrationCreateParams::CountryOption::Si, and Tax::RegistrationCreateParams::CountryOption::Sk

See the changelog for more details.