diff --git a/CHANGELOG.md b/CHANGELOG.md
index 639444149d..56aa5d48f5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,26 @@
 # Changelog
 
+## 81.1.0 - 2024-11-20
+* [#1951](https://github.com/stripe/stripe-go/pull/1951) This release changes the pinned API version to `2024-11-20.acacia`.
+  * Add support for `Respond` test helper method on resource `Issuing.Authorization`
+  * Add support for `Authorizer` on `AccountPersonsRelationshipParams` and `TokenPersonRelationshipParams`
+  * Change type of `AccountFutureRequirementsDisabledReason` and `AccountRequirementsDisabledReason` from `string` to `enum`
+  * Add support for `AdaptivePricing` on `CheckoutSessionParams` and `CheckoutSession`
+  * Add support for `MandateOptions` on `CheckoutSessionPaymentMethodOptionsBacsDebitParams`, `CheckoutSessionPaymentMethodOptionsBacsDebit`, `CheckoutSessionPaymentMethodOptionsSepaDebitParams`, and `CheckoutSessionPaymentMethodOptionsSepaDebit`
+  * Add support for `RequestExtendedAuthorization`, `RequestIncrementalAuthorization`, `RequestMulticapture`, and `RequestOvercapture` on `CheckoutSessionPaymentMethodOptionsCardParams` and `CheckoutSessionPaymentMethodOptionsCard`
+  * Add support for `CaptureMethod` on `CheckoutSessionPaymentMethodOptionsKakaoPayParams`, `CheckoutSessionPaymentMethodOptionsKrCardParams`, `CheckoutSessionPaymentMethodOptionsNaverPayParams`, `CheckoutSessionPaymentMethodOptionsPaycoParams`, and `CheckoutSessionPaymentMethodOptionsSamsungPayParams`
+  * Add support for new value `li_vat` on enums `CheckoutSessionCustomerDetailsTaxIdsType`, `InvoiceCustomerTaxIdsType`, `TaxCalculationCustomerDetailsTaxIdsType`, `TaxIdType`, and `TaxTransactionCustomerDetailsTaxIdsType`
+  * Add support for new value `subscribe` on enums `CheckoutSessionSubmitType` and `PaymentLinkSubmitType`
+  * Add support for new value `financial_account_statement` on enum `FilePurpose`
+  * Add support for `AccountHolderAddress`, `AccountHolderName`, `AccountType`, and `BankAddress` on `FundingInstructionsBankTransferFinancialAddressesAba`, `FundingInstructionsBankTransferFinancialAddressesSwift`, `PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressesAba`, and `PaymentIntentNextActionDisplayBankTransferInstructionsFinancialAddressesSwift`
+  * Add support for `MerchantAmount` and `MerchantCurrency` on `IssuingAuthorizationParams`
+  * Add support for `FraudChallenges` and `VerifiedByFraudChallenge` on `IssuingAuthorization`
+  * Add support for new value `link` on enums `PaymentIntentPaymentMethodOptionsCardNetwork`, `SetupIntentPaymentMethodOptionsCardNetwork`, and `SubscriptionPaymentSettingsPaymentMethodOptionsCardNetwork`
+  * Add support for `SubmitType` on `PaymentLinkParams`
+  * Add support for `TraceID` on `Payout`
+  * Add support for `NetworkDeclineCode` on `RefundDestinationDetailsBlik` and `RefundDestinationDetailsSwish`
+  * Add support for new value `service_tax` on enums `TaxCalculationLineItemTaxBreakdownTaxRateDetailsTaxType`, `TaxCalculationShippingCostTaxBreakdownTaxRateDetailsTaxType`, `TaxCalculationTaxBreakdownTaxRateDetailsTaxType`, `TaxRateTaxType`, and `TaxTransactionShippingCostTaxBreakdownTaxRateDetailsTaxType`
+
 ## 81.0.0 - 2024-10-29
 
 Historically, when upgrading webhooks to a new API version, you also had to upgrade your SDK version. Your webhook's API version needed to match the API version pinned by the SDK you were using to ensure successful deserialization of events. With the `2024-09-30.acacia` release, Stripe follows a [new API release process](https://stripe.com/blog/introducing-stripes-new-api-release-process). As a result, you can safely upgrade your webhook endpoints to any API version within a biannual release (like `acacia`) without upgrading the SDK.
diff --git a/VERSION b/VERSION
index 6a78467e89..1c3cffa48f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-81.0.0
+81.1.0
diff --git a/stripe.go b/stripe.go
index 1e251be796..7d9b3c7b17 100644
--- a/stripe.go
+++ b/stripe.go
@@ -1386,7 +1386,7 @@ func StringSlice(v []string) []*string {
 //
 
 // clientversion is the binding version
-const clientversion = "81.0.0"
+const clientversion = "81.1.0"
 
 // defaultHTTPTimeout is the default timeout on the http.Client used by the library.
 // This is chosen to be consistent with the other Stripe language libraries and