diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a10a3cf..116a606 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -17,8 +17,8 @@ jobs:
       uses: actions/setup-dotnet@v4
       with:
         dotnet-version: |
-          6.0.x
           8.0.x
+          9.0.x
     - name: Restore dependencies
       run: dotnet restore ./src/AspNetCore.Identity.Mongo/
     - name: Build
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 8b7c4db..46b62ae 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -24,20 +24,21 @@ that is not occurring.
 
 #### **Dotnet version**
 
-* master branch refers only relevant and supported by Microsoft versions of dotnet. (Net 6.0 & Net 8.0 for now)
+* master branch refers only relevant and supported by Microsoft versions of dotnet.
 
 * older versions will be branched out, so if you want to make changes make sure you selected right branch.
 
 * relations table:
 
-| Dotnet Version | Branch                  |
-|----------------|-------------------------|
-| netstandard2.1 | `releases/8.x`          |
-| netcoreapp3.1  | `releases/8.x`          |
-| net5.0         | `releases/8.x`          |
-| net6.0         | `releases/8.x` `master` |
-| net7.0         |                         |
-| net8.0         | `master`                |
+| Dotnet Version | Branch         |
+|----------------|----------------|
+| netstandard2.1 | `releases/8.x` |
+| netcoreapp3.1  | `releases/8.x` |
+| net5.0         | `releases/8.x` |
+| net6.0         | `releases/9.x` |
+| net7.0         |                |
+| net8.0         | `master`       |
+| net9.0         | `master`       |
 
 #### **Issue and Pull request templates**
 
diff --git a/README.md b/README.md
index e092e24..3a92e0f 100644
--- a/README.md
+++ b/README.md
@@ -22,11 +22,9 @@ This is a MongoDB provider for the ASP.NET Core Identity framework. It is comple
 
 ## Dotnet Versions support
 
-Starting from `v9.0.0` library only supports **.Net 6.0** and **.Net 8.0** as they are
-only versions maintainable by Microsoft at the moment. [Supported Dotnet Versions](https://dotnet.microsoft.com/en-us/download/dotnet)
+The latest package version supports only dotnet versions maintainable by Microsoft at the moment [Supported Dotnet Versions](https://dotnet.microsoft.com/en-us/download/dotnet)
 
-Library supports **.Net 6.0**, **.Net 5.0**, **.Net Core 3.1**, **.Net Core 2.1**
-simultaneously started from 8.3.0 nuget package.
+Please refer to [this table](./CONTRIBUTING.md#dotnet-version) if you'd like to use this library with older dotnet versions.
 
 ## MongoDB Indexes
 
diff --git a/Tests/Tests.csproj b/Tests/Tests.csproj
index 473d175..cdf75c4 100644
--- a/Tests/Tests.csproj
+++ b/Tests/Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net6.0;net8.0</TargetFrameworks>
+        <TargetFrameworks>net8.0;net9.0</TargetFrameworks>
 
         <IsPackable>false</IsPackable>
     </PropertyGroup>
@@ -9,7 +9,7 @@
     <ItemGroup>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
         <PackageReference Include="Mongo2Go" Version="4.0.0" />
-        <PackageReference Include="NUnit" Version="4.2.2" />
+        <PackageReference Include="NUnit" Version="4.3.1" />
         <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
         <PackageReference Include="coverlet.collector" Version="6.0.2">
           <PrivateAssets>all</PrivateAssets>
diff --git a/samples/TestSite/TestSite.csproj b/samples/TestSite/TestSite.csproj
index af760c4..0886fe0 100644
--- a/samples/TestSite/TestSite.csproj
+++ b/samples/TestSite/TestSite.csproj
@@ -1,14 +1,14 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <UserSecretsId>aspnet-TestSite-4862F257-7F38-4DD8-A1E1-A4E86B434B28</UserSecretsId>
     <DockerDefaultTargetOS>Windows</DockerDefaultTargetOS>
   </PropertyGroup>
 
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.Identity.UI" Version="8.0.11" />
+    <PackageReference Include="Microsoft.AspNetCore.Identity.UI" Version="9.0.0" />
   </ItemGroup>
 
 
diff --git a/src/AspNetCore.Identity.Mongo/AspNetCore.Identity.Mongo.csproj b/src/AspNetCore.Identity.Mongo/AspNetCore.Identity.Mongo.csproj
index 7e110da..65d95f6 100644
--- a/src/AspNetCore.Identity.Mongo/AspNetCore.Identity.Mongo.csproj
+++ b/src/AspNetCore.Identity.Mongo/AspNetCore.Identity.Mongo.csproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>Library</OutputType>
-        <TargetFrameworks>net6.0;net8.0</TargetFrameworks>
+        <TargetFrameworks>net8.0;net9.0</TargetFrameworks>
         <ApplicationIcon />
         <StartupObject />
         <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
@@ -33,16 +33,16 @@
         <FrameworkReference Include="Microsoft.AspNetCore.App" />
     </ItemGroup>
 
-    <ItemGroup Condition="$(TargetFramework) == 'net6.0'">
-        <PackageReference Include="Microsoft.Extensions.Identity.Core" Version="6.0.36" />
-        <PackageReference Include="Microsoft.Extensions.Identity.Stores" Version="6.0.36" />
-    </ItemGroup>
-
     <ItemGroup Condition="$(TargetFramework) == 'net8.0'">
         <PackageReference Include="Microsoft.Extensions.Identity.Core" Version="8.0.11" />
         <PackageReference Include="Microsoft.Extensions.Identity.Stores" Version="8.0.11" />
     </ItemGroup>
 
+    <ItemGroup Condition="$(TargetFramework) == 'net9.0'">
+        <PackageReference Include="Microsoft.Extensions.Identity.Core" Version="9.0.0" />
+        <PackageReference Include="Microsoft.Extensions.Identity.Stores" Version="9.0.0" />
+    </ItemGroup>
+
     <ItemGroup>
         <None Include="..\..\LICENSE.txt">
             <Pack>True</Pack>