diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7a1b321682..ed93184876 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 43.0.0 - 2023-10-16
+* This release changes the pinned API version to `2023-10-16`. Please read the [API Upgrade Guide](https://stripe.com/docs/upgrades#2023-10-16) and carefully review the API changes before upgrading `Stripe.net`.
+* [#2781](https://github.com/stripe/stripe-dotnet/pull/2781) Update generated code
+  * Add support for `LegalGuardian` on `AccountRelationshipOptions` and `TokenPersonRelationshipOptions`
+  * Add support for `AdditionalTosAcceptances` on `TokenPersonOptions`
+
 ## 42.10.0 - 2023-10-16
 * [#2780](https://github.com/stripe/stripe-dotnet/pull/2780) Update generated code
   * Add support for `issuing_token.created` and `issuing_token.updated` event types.
diff --git a/VERSION b/VERSION
index 4b932bb9a6..f3986a6788 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-42.10.0
+43.0.0
diff --git a/src/Stripe.net/Stripe.net.csproj b/src/Stripe.net/Stripe.net.csproj
index f5abd6884c..5f648ff59e 100644
--- a/src/Stripe.net/Stripe.net.csproj
+++ b/src/Stripe.net/Stripe.net.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <Description>Stripe.net is a sync/async .NET 4.6.1+ client, and a portable class library for the Stripe API.  (Official Library)</Description>
-    <Version>42.10.0</Version>
+    <Version>43.0.0</Version>
     <LangVersion>8</LangVersion>
     <Authors>Stripe, Jayme Davis</Authors>
     <TargetFrameworks>net5.0;net6.0;netcoreapp3.1;netstandard2.0;net461</TargetFrameworks>