diff --git a/Directory.Packages.props b/Directory.Packages.props
index 3d463e2..7b7bf87 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -18,8 +18,8 @@
     <PackageVersion Include="Nogic.WritableOptions" Version="4.0.1" />
     <PackageVersion Include="Polyfill" Version="10.8.0" />
     <PackageVersion Include="System.Text.Json" Version="10.0.9" />
-    <PackageVersion Include="TUnit" Version="1.50.0" />
-    <PackageVersion Include="TUnit.Mocks" Version="1.50.0" />
-    <PackageVersion Include="TUnit.Mocks.Assertions" Version="1.50.0" />
+    <PackageVersion Include="TUnit" Version="1.56.18" />
+    <PackageVersion Include="TUnit.Mocks" Version="1.56.18" />
+    <PackageVersion Include="TUnit.Mocks.Assertions" Version="1.56.18" />
   </ItemGroup>
 </Project>
diff --git a/test/Nogic.WritableOptions.Tests/ServiceCollectionExtension.Test.cs b/test/Nogic.WritableOptions.Tests/ServiceCollectionExtension.Test.cs
index 7ca4258..a7933c8 100644
--- a/test/Nogic.WritableOptions.Tests/ServiceCollectionExtension.Test.cs
+++ b/test/Nogic.WritableOptions.Tests/ServiceCollectionExtension.Test.cs
@@ -34,7 +34,7 @@ await Assert
             .That(option)
             .IsNotNull()
             .And.IsAssignableTo<JsonWritableOptions<SampleOption>>()
-            .And.IsNotEqualTo(otherOption);
+            .And.IsNotSameReferenceAs(otherOption);
     }
 
     /// <summary>
@@ -63,7 +63,7 @@ await Assert
             .That(option)
             .IsNotNull()
             .And.IsAssignableTo<JsonWritableOptions<SampleOption>>()
-            .And.IsNotEqualTo(otherOption);
+            .And.IsNotSameReferenceAs(otherOption);
     }
 
     /// <summary>
@@ -94,7 +94,7 @@ await Assert
             .That(option)
             .IsNotNull()
             .And.IsAssignableTo<JsonWritableOptions<SampleOption>>()
-            .And.IsNotEqualTo(otherOption);
+            .And.IsNotSameReferenceAs(otherOption);
     }
 
     /// <summary>
@@ -125,7 +125,7 @@ await Assert
             .That(option)
             .IsNotNull()
             .And.IsAssignableTo<JsonWritableOptions<SampleOption>>()
-            .And.IsNotEqualTo(otherOption);
+            .And.IsNotSameReferenceAs(otherOption);
     }
 
     /// <summary>
@@ -158,7 +158,7 @@ await Assert
             .That(option)
             .IsNotNull()
             .And.IsAssignableTo<JsonWritableOptions<SampleOption>>()
-            .And.IsNotEqualTo(otherOption);
+            .And.IsNotSameReferenceAs(otherOption);
     }
 
     /// <summary>
@@ -190,6 +190,6 @@ await Assert
             .That(option)
             .IsNotNull()
             .And.IsAssignableTo<JsonWritableOptions<SampleOption>>()
-            .And.IsNotEqualTo(otherOption);
+            .And.IsNotSameReferenceAs(otherOption);
     }
 }