diff --git a/CHANGELOG.md b/CHANGELOG.md
index 37a4bdac4..4af68315b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,19 @@
# DocuSign C# Client Changelog
+## [v9.0.0] - eSignature API v2.1-26.1.02.00 - 2026-05-04
+### Removed
+- Removed the deprecated `ListRecipientNamesByEmail` endpoint (`/v2.1/accounts/{accountId}/recipient_names`).
+
+### Added
+- **Accounts API**: Template completion-rate methods (`GetCompletionRateForTemplate`, `GetCompletionRateForTemplateOwner`).
+- **Connect API**: Secret key management methods (`CreateConnectSecret`, `GetConnectSecret`, `DeleteConnectSecret`).
+- **Models**: `SenderCompletionInfo`, `TemplateCompletionInfo`, `TemplateCompletionRateResponse`, `UserCompletionRateResponse`.
+
+### Changed
+- Added support for version v2.1-26.1.02.00 of the DocuSign ESignature API.
+- Updated the SDK release version to 9.0.0.
+- Added query parameters: `include_is_edited` and `link_configuration_id` for document listing methods.
+
## [v8.7.0] - eSignature API v2.1-26.1.00.00 - 2026-03-05
### Changed
- Added support for version v2.1-26.1.00.00 of the DocuSign ESignature API.
diff --git a/README.md b/README.md
index bd3c903da..113f15fba 100755
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ This client SDK is provided as open source, which enables you to customize its f
### Version Information
- **API version**: v2.1
-- **Latest SDK version (Including prerelease)**: 8.7.0
+- **Latest SDK version (Including prerelease)**: 9.0.0
### Requirements
diff --git a/sdk/DocuSign.eSign.sln b/sdk/DocuSign.eSign.sln
index bdddac536..695bdcf5d 100644
--- a/sdk/DocuSign.eSign.sln
+++ b/sdk/DocuSign.eSign.sln
@@ -2,7 +2,7 @@ Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 2012
VisualStudioVersion = 12.0.0.0
MinimumVisualStudioVersion = 10.0.0.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DocuSign.eSign", "src\DocuSign.eSign\DocuSign.eSign.csproj", "{54CE4337-BBB5-4DA9-9DAA-E3BD9F2EA145}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DocuSign.eSign", "src\DocuSign.eSign\DocuSign.eSign.csproj", "{7D2E85BD-F5BE-450C-A6C9-00DF5A133FD7}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -10,10 +10,10 @@ Global
Release|Any CPU = Release|Any CPU
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
- {54CE4337-BBB5-4DA9-9DAA-E3BD9F2EA145}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
- {54CE4337-BBB5-4DA9-9DAA-E3BD9F2EA145}.Debug|Any CPU.Build.0 = Debug|Any CPU
- {54CE4337-BBB5-4DA9-9DAA-E3BD9F2EA145}.Release|Any CPU.ActiveCfg = Release|Any CPU
- {54CE4337-BBB5-4DA9-9DAA-E3BD9F2EA145}.Release|Any CPU.Build.0 = Release|Any CPU
+ {7D2E85BD-F5BE-450C-A6C9-00DF5A133FD7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {7D2E85BD-F5BE-450C-A6C9-00DF5A133FD7}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {7D2E85BD-F5BE-450C-A6C9-00DF5A133FD7}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {7D2E85BD-F5BE-450C-A6C9-00DF5A133FD7}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
diff --git a/sdk/src/DocuSign.eSign/Api/AccountsApi.cs b/sdk/src/DocuSign.eSign/Api/AccountsApi.cs
index 96ff459ea..7eb1eba6b 100644
--- a/sdk/src/DocuSign.eSign/Api/AccountsApi.cs
+++ b/sdk/src/DocuSign.eSign/Api/AccountsApi.cs
@@ -815,6 +815,50 @@ public interface IAccountsApi : IApiAccessor
/// ApiResponse of Object(void)
ApiResponse