diff --git a/src/Machine.Specifications.Runner.ReSharper.Tests/Machine.Specifications.Runner.ReSharper.Tests.csproj b/src/Machine.Specifications.Runner.ReSharper.Tests/Machine.Specifications.Runner.ReSharper.Tests.csproj
index 6b65114..6d9172a 100644
--- a/src/Machine.Specifications.Runner.ReSharper.Tests/Machine.Specifications.Runner.ReSharper.Tests.csproj
+++ b/src/Machine.Specifications.Runner.ReSharper.Tests/Machine.Specifications.Runner.ReSharper.Tests.csproj
@@ -17,7 +17,7 @@
     </PackageReference>
     <PackageReference Include="JetBrains.ReSharper.TestRunner.Abstractions" Version="[2.11.1]" />
     <PackageReference Include="NSubstitute" Version="5.1.0" />
-    <PackageReference Include="NUnit" Version="[3.13.2]" />
+    <PackageReference Include="NUnit" Version="[4.0.0]" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
   </ItemGroup>