diff --git a/DragonFruit.Six.Api.Tests/DragonFruit.Six.Api.Tests.csproj b/DragonFruit.Six.Api.Tests/DragonFruit.Six.Api.Tests.csproj
index c6f686f..1339519 100644
--- a/DragonFruit.Six.Api.Tests/DragonFruit.Six.Api.Tests.csproj
+++ b/DragonFruit.Six.Api.Tests/DragonFruit.Six.Api.Tests.csproj
@@ -6,7 +6,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="NUnit" Version="3.13.3" />
+        <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>