diff --git a/csharpcore/GildedRoseTests/ApprovalTest.cs b/csharpcore/GildedRoseTests/ApprovalTest.cs
index 217ae030..4086ecf2 100644
--- a/csharpcore/GildedRoseTests/ApprovalTest.cs
+++ b/csharpcore/GildedRoseTests/ApprovalTest.cs
@@ -8,13 +8,12 @@ using NUnit.Framework;
 namespace GildedRoseTests;
 
 [UseReporter(typeof(DiffReporter))]
-[TestFixture]
 public class ApprovalTest
 {
     [Test]
     public void ThirtyDays()
     {
-        StringBuilder fakeOutput = new StringBuilder();
+        var fakeOutput = new StringBuilder();
         Console.SetOut(new StringWriter(fakeOutput));
         Console.SetIn(new StringReader($"a{Environment.NewLine}"));
 
diff --git a/csharpcore/GildedRoseTests/GildedRoseTest.cs b/csharpcore/GildedRoseTests/GildedRoseTest.cs
index e5902535..3eb66aaa 100644
--- a/csharpcore/GildedRoseTests/GildedRoseTest.cs
+++ b/csharpcore/GildedRoseTests/GildedRoseTest.cs
@@ -1,17 +1,17 @@
-using Xunit;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using GildedRoseKata;
-
+using NUnit.Framework;
+
 namespace GildedRoseTests;
 
 public class GildedRoseTest
 {
-    [Fact]
+    [Test]
     public void Foo()
     {
-        IList<Item> items = new List<Item> { new Item { Name = "foo", SellIn = 0, Quality = 0 } };
-        GildedRose app = new GildedRose(items);
+        var items = new List<Item> { new Item { Name = "foo", SellIn = 0, Quality = 0 } };
+        var app = new GildedRose(items);
         app.UpdateQuality();
-        Assert.Equal("fixme", items[0].Name);
+        Assert.AreEqual("fixme", items[0].Name);
     }
 }
\ No newline at end of file
diff --git a/csharpcore/GildedRoseTests/GildedRoseTests.csproj b/csharpcore/GildedRoseTests/GildedRoseTests.csproj
index fab24a04..470e8179 100644
--- a/csharpcore/GildedRoseTests/GildedRoseTests.csproj
+++ b/csharpcore/GildedRoseTests/GildedRoseTests.csproj
@@ -7,12 +7,13 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="ApprovalTests" Version="5.8.0" />
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
+        <PackageReference Include="ApprovalTests" Version="5.9.0" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
         <PackageReference Include="NUnit" Version="3.13.3" />
-        <PackageReference Include="xunit" Version="2.4.1" />
-        <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
-        <PackageReference Include="coverlet.collector" Version="3.1.0" />
+        <PackageReference Include="coverlet.collector" Version="6.0.0"><IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+<PrivateAssets>all</PrivateAssets>
+</PackageReference>
+        <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/csharpcore/GildedRoseTests/TextTestFixture.cs b/csharpcore/GildedRoseTests/TextTestFixture.cs
index cb95a8b2..41048211 100644
--- a/csharpcore/GildedRoseTests/TextTestFixture.cs
+++ b/csharpcore/GildedRoseTests/TextTestFixture.cs
@@ -10,7 +10,7 @@ public static class TextTestFixture
     {
         Console.WriteLine("OMGHAI!");
 
-        IList<Item> items = new List<Item>{
+        var items = new List<Item>{
             new Item {Name = "+5 Dexterity Vest", SellIn = 10, Quality = 20},
             new Item {Name = "Aged Brie", SellIn = 2, Quality = 0},
             new Item {Name = "Elixir of the Mongoose", SellIn = 5, Quality = 7},