diff --git a/Source/optimalDb/optimalDb.Interactors.Tests/optimalDb.Interactors.Tests.csproj b/Source/optimalDb/optimalDb.Interactors.Tests/optimalDb.Interactors.Tests.csproj
index a1ebf22..82861bf 100644
--- a/Source/optimalDb/optimalDb.Interactors.Tests/optimalDb.Interactors.Tests.csproj
+++ b/Source/optimalDb/optimalDb.Interactors.Tests/optimalDb.Interactors.Tests.csproj
@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
-    <PackageReference Include="NUnit" Version="3.13.3" />
+    <PackageReference Include="NUnit" Version="4.5.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
   </ItemGroup>