diff --git a/BadMedicineTests/BadMedicineTests.csproj b/BadMedicineTests/BadMedicineTests.csproj
index 2a04bd1..7c812b3 100644
--- a/BadMedicineTests/BadMedicineTests.csproj
+++ b/BadMedicineTests/BadMedicineTests.csproj
@@ -12,7 +12,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.0.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>