diff --git a/CHANGELOG.md b/CHANGELOG.md
index af9372721d..ddcb3e38bd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,19 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
-# Release Notes
+## [Stable Release 6.1.1] - 2025-08-14
+
+This update includes the following changes since the [6.1.0](6.1.0.md) release:
+
+### Fixed
+
+- Reverted changes related to improving partial packet detection, fixup, and replay functionality. This revert addresses regressions introduced in 6.1.0. ([#3556](https://github.com/dotnet/SqlClient/pull/3556))
+- Applied reference assembly corrections supporting vector, fixed JSON tests, and ensured related tests are enabled. [#3562](https://github.com/dotnet/SqlClient/pull/3562)
+- Fixed `SqlVector<T>.Null` API signature in Reference assembly. [#3521](https://github.com/dotnet/SqlClient/pull/3521)
+
+### Changed
+
+- Upgraded `Azure.Identity` and other dependencies to newer versions. ([#3538](https://github.com/dotnet/SqlClient/pull/3538)) ([#3552](https://github.com/dotnet/SqlClient/pull/3552))
 
 ## [Stable Release 6.1.0] - 2025-07-25
 
diff --git a/release-notes/6.1/6.1.1.md b/release-notes/6.1/6.1.1.md
new file mode 100644
index 0000000000..c9a6bfac90
--- /dev/null
+++ b/release-notes/6.1/6.1.1.md
@@ -0,0 +1,79 @@
+# Release Notes
+
+## Stable Release 6.1.1 - 2025-08-14
+
+This update includes the following changes since the [6.1.0](6.1.0.md) release:
+
+### Fixed
+
+- Reverted changes related to improving partial packet detection, fixup, and replay functionality. This revert addresses regressions introduced in 6.1.0. ([#3556](https://github.com/dotnet/SqlClient/pull/3556))
+- Applied reference assembly corrections supporting vector, fixed JSON tests, and ensured related tests are enabled. [#3562](https://github.com/dotnet/SqlClient/pull/3562)
+- Fixed `SqlVector<T>.Null` API signature in Reference assembly. [#3521](https://github.com/dotnet/SqlClient/pull/3521)
+
+### Changed
+
+- Upgraded `Azure.Identity` and other dependencies to newer versions. ([#3538](https://github.com/dotnet/SqlClient/pull/3538)) ([#3552](https://github.com/dotnet/SqlClient/pull/3552))
+
+## Target Platform Support
+
+- .NET Framework 4.6.2+ (Windows ARM64, Windows x86, Windows x64)
+- .NET 8.0+ (Windows x86, Windows x64, Windows ARM64, Windows ARM, Linux, macOS)
+
+### Dependencies
+
+#### .NET Framework 4.6.2+
+
+- Azure.Core 1.47.1
+- Azure.Identity 1.14.2
+- Microsoft.Bcl.Cryptography 8.0.0
+- Microsoft.Data.SqlClient.SNI 6.0.2
+- Microsoft.Extensions.Caching.Memory 8.0.1
+- Microsoft.IdentityModel.JsonWebTokens 7.7.1
+- Microsoft.IdentityModel.Protocols.OpenIdConnect 7.7.1
+- System.Buffers 4.5.1
+- System.Data.Common 4.3.0
+- System.Security.Cryptography.Pkcs 8.0.1
+- System.Text.Encodings.Web 8.0.0
+- System.Text.Json 8.0.5
+
+#### .NET 8.0
+
+- Azure.Core 1.47.1
+- Azure.Identity 1.14.2
+- Microsoft.Bcl.Cryptography 8.0.0
+- Microsoft.Data.SqlClient.SNI.runtime 6.0.2
+- Microsoft.Extensions.Caching.Memory 8.0.1
+- Microsoft.IdentityModel.JsonWebTokens 7.7.1
+- Microsoft.IdentityModel.Protocols.OpenIdConnect 7.7.1
+- Microsoft.SqlServer.Server 1.0.0
+- System.Configuration.ConfigurationManager 8.0.1
+- System.Security.Cryptography.Pkcs 8.0.1
+- System.Text.Json 8.0.5
+
+#### .NET 9.0
+
+- Azure.Core 1.47.1
+- Azure.Identity 1.14.2
+- Microsoft.Bcl.Cryptography 9.0.4
+- Microsoft.Data.SqlClient.SNI.runtime 6.0.2
+- Microsoft.Extensions.Caching.Memory 9.0.4
+- Microsoft.IdentityModel.JsonWebTokens 7.7.1
+- Microsoft.IdentityModel.Protocols.OpenIdConnect 7.7.1
+- Microsoft.SqlServer.Server 1.0.0
+- System.Configuration.ConfigurationManager 9.0.4
+- System.Security.Cryptography.Pkcs 9.0.4
+- System.Text.Json 9.0.5
+
+#### .NET Standard 2.0
+
+- Azure.Core 1.47.1
+- Azure.Identity 1.14.2
+- Microsoft.Bcl.Cryptography 9.0.4
+- Microsoft.Data.SqlClient.SNI.runtime 6.0.2
+- Microsoft.Extensions.Caching.Memory 9.0.4
+- Microsoft.IdentityModel.JsonWebTokens 7.7.1
+- Microsoft.IdentityModel.Protocols.OpenIdConnect 7.7.1
+- Microsoft.SqlServer.Server 1.0.0
+- System.Configuration.ConfigurationManager 9.0.4
+- System.Security.Cryptography.Pkcs 9.0.4
+- System.Text.Json 9.0.5
diff --git a/release-notes/6.1/README.md b/release-notes/6.1/README.md
index e9cccc3732..83a106b744 100644
--- a/release-notes/6.1/README.md
+++ b/release-notes/6.1/README.md
@@ -4,6 +4,7 @@ The following Microsoft.Data.SqlClient 6.1 preview releases have been shipped:
 
 | Release Date | Version | Notes |
 | :-- | :-- | :--: |
+| 2025-08-14 | 6.1.1 | [Release Notes](6.1.1.md) |
 | 2025-07-25 | 6.1.0 | [Release Notes](6.1.0.md) |
 | 2025-06-27 | 6.1.0-preview2.25178.5 | [Release Notes](6.1.0-preview2.md) |
 | 2025-04-30 | 6.1.0-preview1.25120.4 | [Release Notes](6.1.0-preview1.md) |