diff --git a/test/docfx.Snapshot.Tests/SamplesTest.cs b/test/docfx.Snapshot.Tests/SamplesTest.cs
index 5d80b117c63..a8aa0f3462d 100644
--- a/test/docfx.Snapshot.Tests/SamplesTest.cs
+++ b/test/docfx.Snapshot.Tests/SamplesTest.cs
@@ -37,6 +37,8 @@ private class SamplesFactAttribute : FactAttribute
     {
         public SamplesFactAttribute()
         {
+            // When target framework changed.
+            // It need to modify TargetFrameworks of `docfx.Snapshot.Tests.csproj`
 #if !NET8_0
             Skip = "Skip by target framework";
 #endif
diff --git a/test/docfx.Snapshot.Tests/docfx.Snapshot.Tests.csproj b/test/docfx.Snapshot.Tests/docfx.Snapshot.Tests.csproj
index 24c17a9ecf2..decc1422a04 100644
--- a/test/docfx.Snapshot.Tests/docfx.Snapshot.Tests.csproj
+++ b/test/docfx.Snapshot.Tests/docfx.Snapshot.Tests.csproj
@@ -1,4 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>net8.0</TargetFrameworks>
+  </PropertyGroup>
+  
   <ItemGroup>
     <PackageReference Include="Microsoft.Playwright" />
     <PackageReference Include="Verify.DiffPlex" />