diff --git a/Src/Notion.Client/Models/Blocks/Block.cs b/Src/Notion.Client/Models/Blocks/Block.cs
index 1baf2533..81bcd6bb 100644
--- a/Src/Notion.Client/Models/Blocks/Block.cs
+++ b/Src/Notion.Client/Models/Blocks/Block.cs
@@ -1,5 +1,4 @@
 using System;
-using Notion.Client.Models.Blocks;
 
 namespace Notion.Client
 {
diff --git a/Src/Notion.Client/Models/Blocks/IBlock.cs b/Src/Notion.Client/Models/Blocks/IBlock.cs
index 58b17b93..70cd9755 100644
--- a/Src/Notion.Client/Models/Blocks/IBlock.cs
+++ b/Src/Notion.Client/Models/Blocks/IBlock.cs
@@ -1,7 +1,6 @@
 using JsonSubTypes;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Converters;
-using Notion.Client.Models.Blocks;
 
 namespace Notion.Client
 {
diff --git a/Src/Notion.Client/Models/Blocks/IBlockParent.cs b/Src/Notion.Client/Models/Blocks/IBlockParent.cs
index 4e1d7a17..73634400 100644
--- a/Src/Notion.Client/Models/Blocks/IBlockParent.cs
+++ b/Src/Notion.Client/Models/Blocks/IBlockParent.cs
@@ -1,14 +1,14 @@
 using JsonSubTypes;
 using Newtonsoft.Json;
 
-namespace Notion.Client.Models.Blocks
+namespace Notion.Client
 {
     [JsonConverter(typeof(JsonSubtypes), "type")]
     [JsonSubtypes.KnownSubType(typeof(DatabaseParent), ParentType.DatabaseId)]
     [JsonSubtypes.KnownSubType(typeof(PageParent), ParentType.PageId)]
     [JsonSubtypes.KnownSubType(typeof(WorkspaceParent), ParentType.Workspace)]
     [JsonSubtypes.KnownSubType(typeof(BlockParent), ParentType.BlockId)]
-    public interface IBlockParent
+    public interface IBlockParent : IParent
     {
     }
 }
diff --git a/Src/Notion.Client/Models/Parents/BlockParent.cs b/Src/Notion.Client/Models/Parents/BlockParent.cs
index e0a9af48..5cff9458 100644
--- a/Src/Notion.Client/Models/Parents/BlockParent.cs
+++ b/Src/Notion.Client/Models/Parents/BlockParent.cs
@@ -2,7 +2,7 @@
 
 namespace Notion.Client
 {
-    public class BlockParent : IPageParent, IDatabaseParent
+    public class BlockParent : IPageParent, IDatabaseParent, IBlockParent
     {
         /// <summary>
         /// Always has a value "block_id"
diff --git a/Src/Notion.Client/Models/Parents/DatabaseParent.cs b/Src/Notion.Client/Models/Parents/DatabaseParent.cs
index c3e028e7..2e680655 100644
--- a/Src/Notion.Client/Models/Parents/DatabaseParent.cs
+++ b/Src/Notion.Client/Models/Parents/DatabaseParent.cs
@@ -2,7 +2,7 @@
 
 namespace Notion.Client
 {
-    public class DatabaseParent : IPageParent
+    public class DatabaseParent : IPageParent, IBlockParent
     {
         /// <summary>
         /// Always "database_id"
diff --git a/Src/Notion.Client/Models/Parents/PageParent.cs b/Src/Notion.Client/Models/Parents/PageParent.cs
index ff185747..a1f32a01 100644
--- a/Src/Notion.Client/Models/Parents/PageParent.cs
+++ b/Src/Notion.Client/Models/Parents/PageParent.cs
@@ -2,7 +2,7 @@
 
 namespace Notion.Client
 {
-    public class PageParent : IPageParent, IDatabaseParent
+    public class PageParent : IPageParent, IDatabaseParent, IBlockParent
     {
         /// <summary>
         /// Always "page_id".
diff --git a/Src/Notion.Client/Models/Parents/WorkspaceParent.cs b/Src/Notion.Client/Models/Parents/WorkspaceParent.cs
index fc645b60..86c60a54 100644
--- a/Src/Notion.Client/Models/Parents/WorkspaceParent.cs
+++ b/Src/Notion.Client/Models/Parents/WorkspaceParent.cs
@@ -1,6 +1,6 @@
 namespace Notion.Client
 {
-    public class WorkspaceParent : IPageParent, IDatabaseParent
+    public class WorkspaceParent : IPageParent, IDatabaseParent, IBlockParent
     {
         /// <summary>
         /// Always "workspace".