diff --git a/.github/workflows/dotnetcore.yml b/.github/workflows/dotnetcore.yml
index 8537275..334085c 100644
--- a/.github/workflows/dotnetcore.yml
+++ b/.github/workflows/dotnetcore.yml
@@ -15,7 +15,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: 8.0.x
+          dotnet-version: 9.0.x
       - name: Build with dotnet
         run: dotnet build -c Release
       - name: Test with dotnet
diff --git a/README.md b/README.md
index e646dcf..10a4de0 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,25 @@
 # Owl.reCAPTCHA
 Google reCAPTCHA for ASP NET Core (v3 and v2)
 
+# Demo
+
+V3:
+
+![V3](gif/V3_Demo.gif)
+
+V3 Programmatically:
+
+![V3 Programmatically](gif/V3_Programmatically_Demo.gif)
+
+V2 Invisible:
+
+![V2_Invisible](gif/V2_Invisible.gif)
+
+V2 Checkbox:
+
+![V2_Checkbox](gif/V2_Checkbox.gif)
+
+
 # Install-Package
 
 ```
diff --git a/demo/reCAPTCHA.Demo/reCAPTCHA.Demo.csproj b/demo/reCAPTCHA.Demo/reCAPTCHA.Demo.csproj
index ba0b783..dd14a1b 100644
--- a/demo/reCAPTCHA.Demo/reCAPTCHA.Demo.csproj
+++ b/demo/reCAPTCHA.Demo/reCAPTCHA.Demo.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/gif/V2_Checkbox.gif b/gif/V2_Checkbox.gif
new file mode 100644
index 0000000..11dc0b4
Binary files /dev/null and b/gif/V2_Checkbox.gif differ
diff --git a/gif/V2_Invisible.gif b/gif/V2_Invisible.gif
new file mode 100644
index 0000000..ed8f8cb
Binary files /dev/null and b/gif/V2_Invisible.gif differ
diff --git a/gif/V3_Demo.gif b/gif/V3_Demo.gif
new file mode 100644
index 0000000..b577d37
Binary files /dev/null and b/gif/V3_Demo.gif differ
diff --git a/gif/V3_Programmatically_Demo.gif b/gif/V3_Programmatically_Demo.gif
new file mode 100644
index 0000000..741a1fb
Binary files /dev/null and b/gif/V3_Programmatically_Demo.gif differ
diff --git a/src/Owl.reCAPTCHA/Owl.reCAPTCHA.csproj b/src/Owl.reCAPTCHA/Owl.reCAPTCHA.csproj
index d6c2529..dc796ee 100644
--- a/src/Owl.reCAPTCHA/Owl.reCAPTCHA.csproj
+++ b/src/Owl.reCAPTCHA/Owl.reCAPTCHA.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Razor">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFrameworks>net8.0;net9.0</TargetFrameworks>
     <RootNamespace>Owl.reCAPTCHA</RootNamespace>
     <PackageId>Owl.reCAPTCHA</PackageId>
     <Authors>maliming</Authors>
@@ -9,12 +9,12 @@
     <PackageProjectUrl>https://github.com/maliming/reCAPTCHA</PackageProjectUrl>
     <RepositoryUrl>https://github.com/maliming/reCAPTCHA</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
-    <Version>8.0.0</Version>
+    <Version>9.0.0</Version>
     <IsPackable>true</IsPackable>
     <OutputType>Library</OutputType>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
-    <PackageVersion>8.0.0</PackageVersion>
+    <PackageVersion>9.0.0</PackageVersion>
   </PropertyGroup>
 
   <ItemGroup>