diff --git a/TIASshot.Tests/TIASshot.Tests.csproj b/TIASshot.Tests/TIASshot.Tests.csproj
index 2ab809f..4280c19 100644
--- a/TIASshot.Tests/TIASshot.Tests.csproj
+++ b/TIASshot.Tests/TIASshot.Tests.csproj
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\packages\NUnit.4.6.1\build\NUnit.props" Condition="Exists('..\packages\NUnit.4.6.1\build\NUnit.props')" />
+  <Import Project="..\packages\NUnit.5.0.0\build\NUnit.props" Condition="Exists('..\packages\NUnit.5.0.0\build\NUnit.props')" />
   <Import Project="..\packages\NUnit3TestAdapter.4.6.0\build\net462\NUnit3TestAdapter.props" Condition="Exists('..\packages\NUnit3TestAdapter.4.6.0\build\net462\NUnit3TestAdapter.props')" />
   <Import Project="..\packages\Microsoft.NET.Test.Sdk.17.14.1\build\net462\Microsoft.NET.Test.Sdk.props" Condition="Exists('..\packages\Microsoft.NET.Test.Sdk.17.14.1\build\net462\Microsoft.NET.Test.Sdk.props')" />
   <Import Project="..\packages\Microsoft.CodeCoverage.18.10.1\build\netstandard2.0\Microsoft.CodeCoverage.props" Condition="Exists('..\packages\Microsoft.CodeCoverage.18.10.1\build\netstandard2.0\Microsoft.CodeCoverage.props')" />
@@ -45,8 +45,13 @@
       <HintPath>..\packages\Microsoft.CodeCoverage.18.10.1\lib\net462\Microsoft.VisualStudio.CodeCoverage.Shim.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="nunit.framework, Version=4.6.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb, processorArchitecture=MSIL">
-      <HintPath>..\packages\NUnit.4.6.1\lib\net462\nunit.framework.dll</HintPath>
+    <Reference Include="nunit.framework, Version=5.0.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb">
+      <HintPath>..\packages\NUnit.5.0.0\lib\net462\nunit.framework.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="nunit.framework.legacy, Version=5.0.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb">
+      <HintPath>..\packages\NUnit.5.0.0\lib\net462\nunit.framework.legacy.dll</HintPath>
+      <Private>True</Private>
     </Reference>
     <Reference Include="OpenCvSharp, Version=4.0.0.0, Culture=neutral, PublicKeyToken=6adad1e807fea099, processorArchitecture=MSIL">
       <HintPath>..\packages\OpenCvSharp4.4.13.0.20260627\lib\netstandard2.0\OpenCvSharp.dll</HintPath>
@@ -119,8 +124,8 @@
     <Error Condition="!Exists('..\packages\Microsoft.NET.Test.Sdk.17.14.1\build\net462\Microsoft.NET.Test.Sdk.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.NET.Test.Sdk.17.14.1\build\net462\Microsoft.NET.Test.Sdk.props'))" />
     <Error Condition="!Exists('..\packages\Microsoft.NET.Test.Sdk.17.14.1\build\net462\Microsoft.NET.Test.Sdk.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.NET.Test.Sdk.17.14.1\build\net462\Microsoft.NET.Test.Sdk.targets'))" />
     <Error Condition="!Exists('..\packages\NUnit3TestAdapter.4.6.0\build\net462\NUnit3TestAdapter.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\NUnit3TestAdapter.4.6.0\build\net462\NUnit3TestAdapter.props'))" />
-    <Error Condition="!Exists('..\packages\NUnit.4.6.1\build\NUnit.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\NUnit.4.6.1\build\NUnit.props'))" />
     <Error Condition="!Exists('..\packages\System.ValueTuple.4.6.2\build\net471\System.ValueTuple.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\System.ValueTuple.4.6.2\build\net471\System.ValueTuple.targets'))" />
+    <Error Condition="!Exists('..\packages\NUnit.5.0.0\build\NUnit.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\NUnit.5.0.0\build\NUnit.props'))" />
   </Target>
   <Import Project="..\packages\Microsoft.CodeCoverage.18.10.1\build\netstandard2.0\Microsoft.CodeCoverage.targets" Condition="Exists('..\packages\Microsoft.CodeCoverage.18.10.1\build\netstandard2.0\Microsoft.CodeCoverage.targets')" />
   <Import Project="..\packages\Microsoft.NET.Test.Sdk.17.14.1\build\net462\Microsoft.NET.Test.Sdk.targets" Condition="Exists('..\packages\Microsoft.NET.Test.Sdk.17.14.1\build\net462\Microsoft.NET.Test.Sdk.targets')" />
diff --git a/TIASshot.Tests/packages.config b/TIASshot.Tests/packages.config
index 9527e71..879d5f4 100644
--- a/TIASshot.Tests/packages.config
+++ b/TIASshot.Tests/packages.config
@@ -2,7 +2,7 @@
 <packages>
   <package id="Microsoft.CodeCoverage" version="18.10.1" targetFramework="net48" />
   <package id="Microsoft.NET.Test.Sdk" version="17.14.1" targetFramework="net48" />
-  <package id="NUnit" version="4.6.1" targetFramework="net48" />
+  <package id="NUnit" version="5.0.0" targetFramework="net48" />
   <package id="NUnit3TestAdapter" version="4.6.0" targetFramework="net48" />
   <package id="OpenCvSharp4" version="4.13.0.20260627" targetFramework="net48" />
   <package id="OpenCvSharp4.runtime.win" version="4.13.0.20260627" targetFramework="net48" />