diff --git a/Source/RatioForge.Desktop.Tests/RatioForge.Desktop.Tests.csproj b/Source/RatioForge.Desktop.Tests/RatioForge.Desktop.Tests.csproj
index ec9bab3..9904cb3 100644
--- a/Source/RatioForge.Desktop.Tests/RatioForge.Desktop.Tests.csproj
+++ b/Source/RatioForge.Desktop.Tests/RatioForge.Desktop.Tests.csproj
@@ -11,7 +11,7 @@
   <ItemGroup>
     <PackageReference Include="Avalonia.Headless.NUnit" Version="12.1.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.10.1" />
-    <PackageReference Include="NUnit" Version="4.6.1" />
+    <PackageReference Include="NUnit" Version="5.0.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="6.3.0" />
     <PackageReference Include="NUnit.Analyzers" Version="4.15.0">
       <PrivateAssets>all</PrivateAssets>
diff --git a/Source/RatioForge.Tests/RatioForge.Tests.csproj b/Source/RatioForge.Tests/RatioForge.Tests.csproj
index 31931e5..fe45b97 100644
--- a/Source/RatioForge.Tests/RatioForge.Tests.csproj
+++ b/Source/RatioForge.Tests/RatioForge.Tests.csproj
@@ -27,7 +27,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.10.1" />
-    <PackageReference Include="NUnit" Version="4.6.1" />
+    <PackageReference Include="NUnit" Version="5.0.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="6.3.0" />
     <PackageReference Include="NUnit.Analyzers" Version="4.15.0">
       <PrivateAssets>all</PrivateAssets>