diff --git a/src/DotNetStac/Item/StacItem.Helper.cs b/src/DotNetStac/Item/StacItem.Helper.cs
index efa1a63f..d7a4d902 100644
--- a/src/DotNetStac/Item/StacItem.Helper.cs
+++ b/src/DotNetStac/Item/StacItem.Helper.cs
@@ -17,7 +17,7 @@
 
 namespace Stac.Item
 {
-    public partial class StacItem
+    public partial class StacItem : IStacItem, IStacObject
     {
      
         public static async Task<IStacItem> LoadUri(Uri uri)