diff --git a/Change-Tab-Leader-of-TOC/Console-App-.NET-Framework/Change-Tab-Leader-of-TOC/App.config b/Change-Tab-Leader-of-TOC/Console-App-.NET-Framework/Change-Tab-Leader-of-TOC/App.config
index 56efbc7..8d23437 100644
--- a/Change-Tab-Leader-of-TOC/Console-App-.NET-Framework/Change-Tab-Leader-of-TOC/App.config
+++ b/Change-Tab-Leader-of-TOC/Console-App-.NET-Framework/Change-Tab-Leader-of-TOC/App.config
@@ -1,6 +1,6 @@
-<?xml version="1.0" encoding="utf-8" ?>
+<?xml version="1.0" encoding="utf-8"?>
 <configuration>
     <startup> 
-        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.2"/>
     </startup>
-</configuration>
\ No newline at end of file
+</configuration>
diff --git a/Change-Tab-Leader-of-TOC/Console-App-.NET-Framework/Change-Tab-Leader-of-TOC/Change-Tab-Leader-of-TOC.csproj b/Change-Tab-Leader-of-TOC/Console-App-.NET-Framework/Change-Tab-Leader-of-TOC/Change-Tab-Leader-of-TOC.csproj
index ca7d57e..c0b567a 100644
--- a/Change-Tab-Leader-of-TOC/Console-App-.NET-Framework/Change-Tab-Leader-of-TOC/Change-Tab-Leader-of-TOC.csproj
+++ b/Change-Tab-Leader-of-TOC/Console-App-.NET-Framework/Change-Tab-Leader-of-TOC/Change-Tab-Leader-of-TOC.csproj
@@ -8,10 +8,11 @@
     <OutputType>Exe</OutputType>
     <RootNamespace>Change_Tab_Leader_of_TOC</RootNamespace>
     <AssemblyName>Change-Tab-Leader-of-TOC</AssemblyName>
-    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.2</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <Deterministic>true</Deterministic>
+    <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -33,17 +34,17 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Syncfusion.Compression.Base, Version=19.1460.0.56, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
-      <HintPath>..\packages\Syncfusion.Compression.Base.19.1.0.56\lib\net46\Syncfusion.Compression.Base.dll</HintPath>
+    <Reference Include="Syncfusion.Compression.Base, Version=26.1462.42.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
+      <HintPath>..\packages\Syncfusion.Compression.Base.26.1.42\lib\net462\Syncfusion.Compression.Base.dll</HintPath>
     </Reference>
-    <Reference Include="Syncfusion.DocIO.Base, Version=19.1460.0.56, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
-      <HintPath>..\packages\Syncfusion.DocIO.WinForms.19.1.0.56\lib\net46\Syncfusion.DocIO.Base.dll</HintPath>
+    <Reference Include="Syncfusion.DocIO.Base, Version=26.1462.42.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
+      <HintPath>..\packages\Syncfusion.DocIO.WinForms.26.1.42\lib\net462\Syncfusion.DocIO.Base.dll</HintPath>
     </Reference>
-    <Reference Include="Syncfusion.Licensing, Version=19.1460.0.56, Culture=neutral, PublicKeyToken=632609b4d040f6b4, processorArchitecture=MSIL">
-      <HintPath>..\packages\Syncfusion.Licensing.19.1.0.56\lib\net46\Syncfusion.Licensing.dll</HintPath>
+    <Reference Include="Syncfusion.Licensing, Version=26.1462.42.0, Culture=neutral, PublicKeyToken=632609b4d040f6b4, processorArchitecture=MSIL">
+      <HintPath>..\packages\Syncfusion.Licensing.26.1.42\lib\net462\Syncfusion.Licensing.dll</HintPath>
     </Reference>
-    <Reference Include="Syncfusion.OfficeChart.Base, Version=19.1460.0.56, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
-      <HintPath>..\packages\Syncfusion.OfficeChart.Base.19.1.0.56\lib\net46\Syncfusion.OfficeChart.Base.dll</HintPath>
+    <Reference Include="Syncfusion.OfficeChart.Base, Version=26.1462.42.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
+      <HintPath>..\packages\Syncfusion.OfficeChart.Base.26.1.42\lib\net462\Syncfusion.OfficeChart.Base.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
diff --git a/Change-Tab-Leader-of-TOC/Console-App-.NET-Framework/Change-Tab-Leader-of-TOC/packages.config b/Change-Tab-Leader-of-TOC/Console-App-.NET-Framework/Change-Tab-Leader-of-TOC/packages.config
index 4f9b8ba..ff796ce 100644
--- a/Change-Tab-Leader-of-TOC/Console-App-.NET-Framework/Change-Tab-Leader-of-TOC/packages.config
+++ b/Change-Tab-Leader-of-TOC/Console-App-.NET-Framework/Change-Tab-Leader-of-TOC/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Syncfusion.Compression.Base" version="19.1.0.56" targetFramework="net472" />
-  <package id="Syncfusion.DocIO.WinForms" version="19.1.0.56" targetFramework="net472" />
-  <package id="Syncfusion.Licensing" version="19.1.0.56" targetFramework="net472" />
-  <package id="Syncfusion.OfficeChart.Base" version="19.1.0.56" targetFramework="net472" />
+  <package id="Syncfusion.Compression.Base" version="26.1.42" targetFramework="net462" />
+  <package id="Syncfusion.DocIO.WinForms" version="26.1.42" targetFramework="net462" />
+  <package id="Syncfusion.Licensing" version="26.1.42" targetFramework="net462" />
+  <package id="Syncfusion.OfficeChart.Base" version="26.1.42" targetFramework="net462" />
 </packages>
\ No newline at end of file
diff --git a/Create-TOC/Console-App-.NET-Core/Create-TOC/Create-TOC.csproj b/Create-TOC/Console-App-.NET-Core/Create-TOC/Create-TOC.csproj
index 3882c1f..4f1669d 100644
--- a/Create-TOC/Console-App-.NET-Core/Create-TOC/Create-TOC.csproj
+++ b/Create-TOC/Console-App-.NET-Core/Create-TOC/Create-TOC.csproj
@@ -2,11 +2,11 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Syncfusion.DocIORenderer.Net.Core" Version="18.2.0.44" />
+    <PackageReference Include="Syncfusion.DocIORenderer.Net.Core" Version="*" />
   </ItemGroup>
 
 </Project>
diff --git a/Customize-TOC-entry-styles/Console-App-.NET-Core/Customize-TOC-entries-style/Customize-TOC-entries-style.csproj b/Customize-TOC-entry-styles/Console-App-.NET-Core/Customize-TOC-entries-style/Customize-TOC-entries-style.csproj
index 7abd7ac..0b62b92 100644
--- a/Customize-TOC-entry-styles/Console-App-.NET-Core/Customize-TOC-entries-style/Customize-TOC-entries-style.csproj
+++ b/Customize-TOC-entry-styles/Console-App-.NET-Core/Customize-TOC-entries-style/Customize-TOC-entries-style.csproj
@@ -2,12 +2,12 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <RootNamespace>customize_toc_entries_style</RootNamespace>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Syncfusion.DocIORenderer.Net.Core" Version="18.2.0.44" />
+    <PackageReference Include="Syncfusion.DocIORenderer.Net.Core" Version="*" />
   </ItemGroup>
 
 </Project>
diff --git a/Edit-TOC/Console-App-.NET-Core/Edit-TOC/Edit-TOC.csproj b/Edit-TOC/Console-App-.NET-Core/Edit-TOC/Edit-TOC.csproj
index 3882c1f..4f1669d 100644
--- a/Edit-TOC/Console-App-.NET-Core/Edit-TOC/Edit-TOC.csproj
+++ b/Edit-TOC/Console-App-.NET-Core/Edit-TOC/Edit-TOC.csproj
@@ -2,11 +2,11 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Syncfusion.DocIORenderer.Net.Core" Version="18.2.0.44" />
+    <PackageReference Include="Syncfusion.DocIORenderer.Net.Core" Version="*" />
   </ItemGroup>
 
 </Project>
diff --git a/Remove-TOC/Console-App-.NET-Core/Remove-TOC/Remove-TOC.csproj b/Remove-TOC/Console-App-.NET-Core/Remove-TOC/Remove-TOC.csproj
index 3882c1f..4f1669d 100644
--- a/Remove-TOC/Console-App-.NET-Core/Remove-TOC/Remove-TOC.csproj
+++ b/Remove-TOC/Console-App-.NET-Core/Remove-TOC/Remove-TOC.csproj
@@ -2,11 +2,11 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Syncfusion.DocIORenderer.Net.Core" Version="18.2.0.44" />
+    <PackageReference Include="Syncfusion.DocIORenderer.Net.Core" Version="*" />
   </ItemGroup>
 
 </Project>
diff --git a/TOC-for-custom-styles/Console-App-.NET-Core/TOC-for-custom-styles/TOC-for-custom-styles.csproj b/TOC-for-custom-styles/Console-App-.NET-Core/TOC-for-custom-styles/TOC-for-custom-styles.csproj
index 3882c1f..4f1669d 100644
--- a/TOC-for-custom-styles/Console-App-.NET-Core/TOC-for-custom-styles/TOC-for-custom-styles.csproj
+++ b/TOC-for-custom-styles/Console-App-.NET-Core/TOC-for-custom-styles/TOC-for-custom-styles.csproj
@@ -2,11 +2,11 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Syncfusion.DocIORenderer.Net.Core" Version="18.2.0.44" />
+    <PackageReference Include="Syncfusion.DocIORenderer.Net.Core" Version="*" />
   </ItemGroup>
 
 </Project>
diff --git a/Update-TOC/Console-App-.NET-Core/Update-TOC/Update-TOC.csproj b/Update-TOC/Console-App-.NET-Core/Update-TOC/Update-TOC.csproj
index 3882c1f..4f1669d 100644
--- a/Update-TOC/Console-App-.NET-Core/Update-TOC/Update-TOC.csproj
+++ b/Update-TOC/Console-App-.NET-Core/Update-TOC/Update-TOC.csproj
@@ -2,11 +2,11 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Syncfusion.DocIORenderer.Net.Core" Version="18.2.0.44" />
+    <PackageReference Include="Syncfusion.DocIORenderer.Net.Core" Version="*" />
   </ItemGroup>
 
 </Project>