diff --git a/Src/Notion.Client/Models/PropertyItems/IPropertyItemObject.cs b/Src/Notion.Client/Models/PropertyItems/IPropertyItemObject.cs
index e6eb91c2..5ebc7730 100644
--- a/Src/Notion.Client/Models/PropertyItems/IPropertyItemObject.cs
+++ b/Src/Notion.Client/Models/PropertyItems/IPropertyItemObject.cs
@@ -13,5 +13,14 @@ public interface IPropertyItemObject
 
         [JsonProperty("type")]
         string Type { get; }
+
+        [JsonProperty("id")]
+        string Id { get; }
+
+        /// <summary>
+        /// Only present in paginated property values with another page of results. If present, the url the user can request to get the next page of results.
+        /// </summary>
+        [JsonProperty("next_url")]
+        string NextURL { get; }
     }
 }
diff --git a/Src/Notion.Client/Models/PropertyItems/ListPropertyItem.cs b/Src/Notion.Client/Models/PropertyItems/ListPropertyItem.cs
index 3ca83d81..f539fcd6 100644
--- a/Src/Notion.Client/Models/PropertyItems/ListPropertyItem.cs
+++ b/Src/Notion.Client/Models/PropertyItems/ListPropertyItem.cs
@@ -4,14 +4,16 @@
 
 namespace Notion.Client
 {
-    [JsonConverter(typeof(JsonSubtypes), "type")]
-    [JsonSubtypes.KnownSubType(typeof(RollupPropertyItem), "rollup")]
-    [JsonSubtypes.FallBackSubType(typeof(ListPropertyItem))]
     public class ListPropertyItem : IPropertyItemObject
     {
         public string Object => "list";
+
         public virtual string Type { get; set; }
 
+        public string Id { get; set; }
+
+        public string NextURL { get; set; }
+
         [JsonProperty("results")]
         public IEnumerable<SimplePropertyItem> Results { get; set; }
 
@@ -20,5 +22,8 @@ public class ListPropertyItem : IPropertyItemObject
 
         [JsonProperty("next_cursor")]
         public string NextCursor { get; set; }
+
+        [JsonProperty("property_item")]
+        public SimplePropertyItem PropertyItem { get; set; }
     }
 }
diff --git a/Src/Notion.Client/Models/PropertyItems/RollupPropertyItem.cs b/Src/Notion.Client/Models/PropertyItems/RollupPropertyItem.cs
deleted file mode 100644
index 6e6e53cd..00000000
--- a/Src/Notion.Client/Models/PropertyItems/RollupPropertyItem.cs
+++ /dev/null
@@ -1,12 +0,0 @@
-using Newtonsoft.Json;
-
-namespace Notion.Client
-{
-    public class RollupPropertyItem : ListPropertyItem
-    {
-        public override string Type => "rollup";
-
-        [JsonProperty("rollup")]
-        public RollupValue Rollup { get; set; }
-    }
-}
diff --git a/Src/Notion.Client/Models/PropertyItems/SimplePropertyItem.cs b/Src/Notion.Client/Models/PropertyItems/SimplePropertyItem.cs
index 6cc1f52b..da753319 100644
--- a/Src/Notion.Client/Models/PropertyItems/SimplePropertyItem.cs
+++ b/Src/Notion.Client/Models/PropertyItems/SimplePropertyItem.cs
@@ -27,5 +27,9 @@ public abstract class SimplePropertyItem : IPropertyItemObject
         public string Object => "property_item";
 
         public abstract string Type { get; }
+
+        public string Id { get; set; }
+
+        public string NextURL { get; set; }
     }
 }