diff --git a/src/Stravaig.Extensions.Core.Analyzer.Tests/Stravaig.Extensions.Core.Analyzer.Tests.csproj b/src/Stravaig.Extensions.Core.Analyzer.Tests/Stravaig.Extensions.Core.Analyzer.Tests.csproj
index 4a1d53a..0f62009 100644
--- a/src/Stravaig.Extensions.Core.Analyzer.Tests/Stravaig.Extensions.Core.Analyzer.Tests.csproj
+++ b/src/Stravaig.Extensions.Core.Analyzer.Tests/Stravaig.Extensions.Core.Analyzer.Tests.csproj
@@ -16,7 +16,7 @@
     <PackageReference Include="Microsoft.CodeAnalysis.VisualBasic.Analyzer.Testing.NUnit" Version="1.1.1" />
     <PackageReference Include="Microsoft.CodeAnalysis.VisualBasic.CodeFix.Testing.NUnit" Version="1.1.1" />
     <PackageReference Include="Microsoft.CodeAnalysis.VisualBasic.CodeRefactoring.Testing.NUnit" Version="1.1.1" />
-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.0.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
   </ItemGroup>
 
diff --git a/src/Stravaig.Extensions.Core.Tests/Stravaig.Extensions.Core.Tests.csproj b/src/Stravaig.Extensions.Core.Tests/Stravaig.Extensions.Core.Tests.csproj
index a563926..c84776d 100644
--- a/src/Stravaig.Extensions.Core.Tests/Stravaig.Extensions.Core.Tests.csproj
+++ b/src/Stravaig.Extensions.Core.Tests/Stravaig.Extensions.Core.Tests.csproj
@@ -9,7 +9,7 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-        <PackageReference Include="NUnit" Version="3.14.0" />
+        <PackageReference Include="NUnit" Version="4.0.0" />
         <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
         <PackageReference Include="coverlet.collector" Version="6.0.0" />
         <PackageReference Include="Shouldly" Version="4.2.1" />