diff --git a/tests/SharpGLTF.Cesium.Tests/VertexWithFeatureId.cs b/tests/SharpGLTF.Cesium.Tests/VertexWithFeatureId.cs
index f0b1763b..df1d7e2e 100644
--- a/tests/SharpGLTF.Cesium.Tests/VertexWithFeatureId.cs
+++ b/tests/SharpGLTF.Cesium.Tests/VertexWithFeatureId.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Numerics;
 
 using SharpGLTF.Geometry.VertexTypes;
@@ -7,6 +8,10 @@
 
 namespace SharpGLTF
 {
+
+    #if NET6_0_OR_GREATER
+        [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicFields)]
+    #endif
     [System.Diagnostics.DebuggerDisplay("𝐂:{Color} 𝐔𝐕:{TexCoord}")]
     public struct VertexWithFeatureId : IVertexCustom
     {