diff --git a/Microsoft.Azure.Cosmos/src/Json/JsonBinaryEncoding.cs b/Microsoft.Azure.Cosmos/src/Json/JsonBinaryEncoding.cs
index d6c82f91d1..d9bb24335b 100644
--- a/Microsoft.Azure.Cosmos/src/Json/JsonBinaryEncoding.cs
+++ b/Microsoft.Azure.Cosmos/src/Json/JsonBinaryEncoding.cs
@@ -85,6 +85,9 @@ internal static class JsonBinaryEncoding
             "properties",
             "type",
             "value",
+            "Feature",
+            "FeatureCollection",
+            "_id",
         };
 
         /// <summary>