diff --git a/CHANGELOG.md b/CHANGELOG.md
index 64be424..c4d9908 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,23 @@
 <!-- This file is generated, please add to it using `knope document-change` in the client-library-templates repo -->
 # Changelog
 
+## 10.10.3 (2026-10-06)
+
+### Fixes
+
+#### Document `required` fields on several API resource responses
+
+Several resource response schemas were missing `required` field lists,
+even though the fields are always present in the actual response.
+Added accurate `required` arrays (and fixed a few hardcoded docs
+examples that predated them) for: `payment`, `bank_details_lookup`,
+`billing_request_template`, `currency_exchange_rate`, `mandate_import`,
+`mandate_import_entry`, `negative_balance_limit`, `payer_authorisation`,
+`payout`, `payout_item`, `refund`, `scenario_simulator`,
+`scheme_identifier`, `tax_rate`, `verification_detail` and `logo`.
+
+This is a documentation-only change; API behaviour is unchanged.
+
 ## 10.10.2 (2026-10-06)
 
 ### Fixes
diff --git a/GoCardless/GoCardless.csproj b/GoCardless/GoCardless.csproj
index 6cab06f..01dc671 100644
--- a/GoCardless/GoCardless.csproj
+++ b/GoCardless/GoCardless.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <PackageId>GoCardless</PackageId>
-    <PackageVersion>10.10.2</PackageVersion>
+    <PackageVersion>10.10.3</PackageVersion>
     <Authors>GoCardless Ltd</Authors>
     <Description>Client for the GoCardless API - a powerful, simple solution for the collection of recurring bank-to-bank payments</Description>
     <PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>
@@ -10,7 +10,7 @@
     <Copyright>GoCardless Ltd</Copyright>
     <PackageTags>gocardless payments rest api direct debit</PackageTags>
     <PackageLicenseUrl>https://github.com/gocardless/gocardless-dotnet/blob/master/LICENSE.txt</PackageLicenseUrl>
-    <PackageReleaseNotes>https://github.com/gocardless/gocardless-dotnet/releases/tag/v10.10.2</PackageReleaseNotes>
+    <PackageReleaseNotes>https://github.com/gocardless/gocardless-dotnet/releases/tag/v10.10.3</PackageReleaseNotes>
     <TargetFrameworks>netstandard2.0;netstandard2.1;net461;net8.0</TargetFrameworks>
     <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
diff --git a/GoCardless/GoCardlessClient.cs b/GoCardless/GoCardlessClient.cs
index 33f3fe1..ffccc77 100644
--- a/GoCardless/GoCardlessClient.cs
+++ b/GoCardless/GoCardlessClient.cs
@@ -429,11 +429,11 @@ string idempotencyKey
 #endif
 
             var userAgentInformation =
-                $" gocardless-dotnet/10.10.2 {runtimeFrameworkInformation} {Helpers.CleanupOSDescriptionString(OSRunningOn)}";
+                $" gocardless-dotnet/10.10.3 {runtimeFrameworkInformation} {Helpers.CleanupOSDescriptionString(OSRunningOn)}";
 
             requestMessage.Headers.Add("User-Agent", userAgentInformation);
             requestMessage.Headers.Add("GoCardless-Version", "2015-07-06");
-            requestMessage.Headers.Add("GoCardless-Client-Version", "10.10.2");
+            requestMessage.Headers.Add("GoCardless-Client-Version", "10.10.3");
             requestMessage.Headers.Add("GoCardless-Client-Library", "gocardless-dotnet");
             requestMessage.Headers.Authorization =
                 new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", _accessToken);
diff --git a/README.md b/README.md
index b52cac5..9d81442 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ For full details of the GoCardless API, see the [API docs](https://developer.goc
 
 To install `GoCardless`, run the following command in the [Package Manager Console](https://docs.microsoft.com/en-us/nuget/tools/package-manager-console)
 
-`Install-Package GoCardless -Version 10.10.2`
+`Install-Package GoCardless -Version 10.10.3`
 
 
 ## Usage