diff --git a/src/SJP.FsNotify.Tests/SJP.FsNotify.Tests.csproj b/src/SJP.FsNotify.Tests/SJP.FsNotify.Tests.csproj
index 1f7e011..918aab0 100644
--- a/src/SJP.FsNotify.Tests/SJP.FsNotify.Tests.csproj
+++ b/src/SJP.FsNotify.Tests/SJP.FsNotify.Tests.csproj
@@ -9,7 +9,7 @@
     <PackageReference Include="coverlet.collector" Version="6.0.0" PrivateAssets="All" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
     <PackageReference Include="Moq" Version="4.20.69" />
-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.0.1" />
     <PackageReference Include="NUnit.Analyzers" Version="3.9.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
     <PackageReference Include="System.Linq.Async" Version="6.0.1" />