diff --git a/UnitTest/UnitTest.csproj b/UnitTest/UnitTest.csproj
index 020f238..04a638c 100644
--- a/UnitTest/UnitTest.csproj
+++ b/UnitTest/UnitTest.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
 
diff --git a/Watermark.Net/.vs/ProjectEvaluation/watermark.net.metadata.v9.bin b/Watermark.Net/.vs/ProjectEvaluation/watermark.net.metadata.v9.bin
deleted file mode 100644
index ece6ad6..0000000
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diff --git a/Watermark.Net/.vs/ProjectEvaluation/watermark.net.projects.v9.bin b/Watermark.Net/.vs/ProjectEvaluation/watermark.net.projects.v9.bin
deleted file mode 100644
index dd58c52..0000000
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diff --git a/Watermark.Net/.vs/ProjectEvaluation/watermark.net.strings.v9.bin b/Watermark.Net/.vs/ProjectEvaluation/watermark.net.strings.v9.bin
deleted file mode 100644
index 99160ee..0000000
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diff --git a/Watermark.Net/.vs/Watermark.Net/CopilotIndices/17.14.734.62261/CodeChunks.db b/Watermark.Net/.vs/Watermark.Net/CopilotIndices/17.14.734.62261/CodeChunks.db
deleted file mode 100644
index 156ed92..0000000
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diff --git a/Watermark.Net/.vs/Watermark.Net/CopilotIndices/17.14.734.62261/SemanticSymbols.db b/Watermark.Net/.vs/Watermark.Net/CopilotIndices/17.14.734.62261/SemanticSymbols.db
deleted file mode 100644
index 9660480..0000000
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diff --git a/Watermark.Net/.vs/Watermark.Net/DesignTimeBuild/.dtbcache.v2 b/Watermark.Net/.vs/Watermark.Net/DesignTimeBuild/.dtbcache.v2
index 0e09f6e..90ced4a 100644
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diff --git a/Watermark.Net/.vs/Watermark.Net/FileContentIndex/0c5a11ba-d38c-4c39-88f2-28df019c6099.vsidx b/Watermark.Net/.vs/Watermark.Net/FileContentIndex/0c5a11ba-d38c-4c39-88f2-28df019c6099.vsidx
deleted file mode 100644
index 12aa741..0000000
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diff --git a/Watermark.Net/Watermark.Net.csproj b/Watermark.Net/Watermark.Net.csproj
index 911d3a5..9948329 100644
--- a/Watermark.Net/Watermark.Net.csproj
+++ b/Watermark.Net/Watermark.Net.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <EnforceCodeStyleInBuild>True</EnforceCodeStyleInBuild>