diff --git a/Appwrite/Appwrite.csproj b/Appwrite/Appwrite.csproj
index 652bb83e..2fde9b18 100644
--- a/Appwrite/Appwrite.csproj
+++ b/Appwrite/Appwrite.csproj
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;net462</TargetFrameworks>
     <PackageId>Appwrite</PackageId>
-    <Version>8.0.0</Version>
+    <Version>8.1.0</Version>
     <Authors>Appwrite Team</Authors>
     <Company>Appwrite Team</Company>
     <Description>
diff --git a/Appwrite/Client.cs b/Appwrite/Client.cs
index 96fff456..54713311 100644
--- a/Appwrite/Client.cs
+++ b/Appwrite/Client.cs
@@ -77,11 +77,11 @@ public Client(
             _headers = new Dictionary<string, string>()
             {
                 { "content-type", "application/json" },
-                { "user-agent", $"AppwriteDotNetSDK/8.0.0 ({Environment.OSVersion.Platform}; {Environment.OSVersion.VersionString})"},
+                { "user-agent", $"AppwriteDotNetSDK/8.1.0 ({Environment.OSVersion.Platform}; {Environment.OSVersion.VersionString})"},
                 { "x-sdk-name", ".NET" },
                 { "x-sdk-platform", "server" },
                 { "x-sdk-language", "dotnet" },
-                { "x-sdk-version", "8.0.0"},
+                { "x-sdk-version", "8.1.0"},
                 { "X-Appwrite-Response-Format", "2.0.0" }
             };
 
diff --git a/Appwrite/Services/Account.cs b/Appwrite/Services/Account.cs
index 22a13925..a4800d1d 100644
--- a/Appwrite/Services/Account.cs
+++ b/Appwrite/Services/Account.cs
@@ -1930,7 +1930,7 @@ static Models.Token Convert(Dictionary<string, object> it)
         /// limits](https://appwrite.io/docs/authentication-security#limits).
         /// </para>
         /// </summary>
-        public Task<String> CreateOAuth2Token(Appwrite.Enums.OAuthProvider provider, string? success = null, string? failure = null, List<string>? scopes = null)
+        public Task<String> CreateOAuth2Token(Appwrite.Enums.OAuthProvider provider, string? success = null, string? failure = null, List<string>? scopes = null, string? state = null)
         {
             var apiPath = "/account/tokens/oauth2/{provider}"
                 .Replace("{provider}", provider.Value);
@@ -1939,7 +1939,8 @@ public Task<String> CreateOAuth2Token(Appwrite.Enums.OAuthProvider provider, str
             {
                 { "success", success },
                 { "failure", failure },
-                { "scopes", scopes }
+                { "scopes", scopes },
+                { "state", state }
             };
 
             var apiHeaders = new Dictionary<string, string>()
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 628cf683..72e4ed47 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Change Log
 
+## 8.1.0
+
+* Added: optional `state` parameter on `createOAuth2Token`, returned unchanged on the success and failure URLs
+
 ## 8.0.0
 
 * Stable release of the dedicated database APIs: `mysql`, `postgresql`, `mongo`, `documentsDB`, and `vectorsDB` services, previously released as release candidates
diff --git a/README.md b/README.md
index b7581ff7..2680a78e 100644
--- a/README.md
+++ b/README.md
@@ -17,17 +17,17 @@ Appwrite is an open-source backend as a service server that abstracts and simpli
 Add this reference to your project's `.csproj` file:
 
 ```xml
-<PackageReference Include="Appwrite" Version="8.0.0" />
+<PackageReference Include="Appwrite" Version="8.1.0" />
 ```
 
 You can install packages from the command line:
 
 ```powershell
 # Package Manager
-Install-Package Appwrite -Version 8.0.0
+Install-Package Appwrite -Version 8.1.0
 
 # or .NET CLI
-dotnet add package Appwrite --version 8.0.0
+dotnet add package Appwrite --version 8.1.0
 ```
 
 
diff --git a/docs/examples/account/create-o-auth-2-token.md b/docs/examples/account/create-o-auth-2-token.md
index f47f7e5e..8cc40785 100644
--- a/docs/examples/account/create-o-auth-2-token.md
+++ b/docs/examples/account/create-o-auth-2-token.md
@@ -15,7 +15,8 @@ await account.CreateOAuth2Token(
     provider: OAuthProvider.Amazon,
     success: "https://example.com", // optional
     failure: "https://example.com", // optional
-    scopes: new List<string>() // optional
+    scopes: new List<string>(), // optional
+    state: "<STATE>" // optional
 );
 
 ```