diff --git a/Src/Notion.Client/Api/Blocks/RequestParams/BlocksUpdateParameters/UpdateBlocks/BreadcrumbUpdateBlock.cs b/Src/Notion.Client/Api/Blocks/RequestParams/BlocksUpdateParameters/UpdateBlocks/BreadcrumbUpdateBlock.cs
new file mode 100644
index 00000000..2e504dff
--- /dev/null
+++ b/Src/Notion.Client/Api/Blocks/RequestParams/BlocksUpdateParameters/UpdateBlocks/BreadcrumbUpdateBlock.cs
@@ -0,0 +1,21 @@
+using Newtonsoft.Json;
+
+namespace Notion.Client
+{
+    public class BreadcrumbUpdateBlock : IUpdateBlock
+    {
+        public bool Archived { get; set; }
+
+        [JsonProperty("breadcrumb")]
+        public Data Breadcrumb { get; set; }
+
+        public class Data
+        {
+        }
+
+        public BreadcrumbUpdateBlock()
+        {
+            Breadcrumb = new Data();
+        }
+    }
+}
diff --git a/Src/Notion.Client/Models/Blocks/BlockType.cs b/Src/Notion.Client/Models/Blocks/BlockType.cs
index 1c37f205..89b74db7 100644
--- a/Src/Notion.Client/Models/Blocks/BlockType.cs
+++ b/Src/Notion.Client/Models/Blocks/BlockType.cs
@@ -58,6 +58,9 @@ public enum BlockType
         [EnumMember(Value = "equation")]
         Equation,
 
+        [EnumMember(Value = "breadcrumb")]
+        Breadcrumb,
+
         [EnumMember(Value = "unsupported")]
         Unsupported
     }
diff --git a/Src/Notion.Client/Models/Blocks/BreadcrumbBlock.cs b/Src/Notion.Client/Models/Blocks/BreadcrumbBlock.cs
new file mode 100644
index 00000000..197122bc
--- /dev/null
+++ b/Src/Notion.Client/Models/Blocks/BreadcrumbBlock.cs
@@ -0,0 +1,16 @@
+using Newtonsoft.Json;
+
+namespace Notion.Client
+{
+    public class BreadcrumbBlock : Block
+    {
+        public override BlockType Type => BlockType.Breadcrumb;
+
+        [JsonProperty("breadcrumb")]
+        public Data Breadcrumb { get; set; }
+
+        public class Data
+        {
+        }
+    }
+}
diff --git a/Test/Notion.IntegrationTests/IBlocksClientTests.cs b/Test/Notion.IntegrationTests/IBlocksClientTests.cs
new file mode 100644
index 00000000..58297d42
--- /dev/null
+++ b/Test/Notion.IntegrationTests/IBlocksClientTests.cs
@@ -0,0 +1,79 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using FluentAssertions;
+using Notion.Client;
+using Xunit;
+
+namespace Notion.IntegrationTests
+{
+    public class IBlocksClientTests
+    {
+        [Fact]
+        public async Task AppendChildrenAsync_AppendsBlocksGivenBlocks()
+        {
+            var options = new ClientOptions
+            {
+                AuthToken = Environment.GetEnvironmentVariable("NOTION_AUTH_TOKEN")
+            };
+            INotionClient _client = NotionClientFactory.Create(options);
+
+            var pageId = "3c357473a28149a488c010d2b245a589";
+            var blocks = await _client.Blocks.AppendChildrenAsync(
+                pageId,
+                new BlocksAppendChildrenParameters
+                {
+                    Children = new List<Block>()
+                    {
+                        new BreadcrumbBlock
+                        {
+                            Breadcrumb = new BreadcrumbBlock.Data()
+                        }
+                    }
+                }
+            );
+
+            blocks.Results.Should().HaveCount(1);
+
+            // cleanup
+            var tasks = blocks.Results.Select(x => _client.Blocks.DeleteAsync(x.Id));
+            await Task.WhenAll(tasks);
+        }
+
+        [Fact]
+        public async Task UpdateBlobkAsync_UpdatesGivenBlock()
+        {
+            var options = new ClientOptions
+            {
+                AuthToken = Environment.GetEnvironmentVariable("NOTION_AUTH_TOKEN")
+            };
+            INotionClient _client = NotionClientFactory.Create(options);
+
+            var pageId = "3c357473a28149a488c010d2b245a589";
+            var blocks = await _client.Blocks.AppendChildrenAsync(
+                pageId,
+                new BlocksAppendChildrenParameters
+                {
+                    Children = new List<Block>()
+                    {
+                        new BreadcrumbBlock
+                        {
+                            Breadcrumb = new BreadcrumbBlock.Data()
+                        }
+                    }
+                }
+            );
+
+            var blockId = blocks.Results.First().Id;
+            await _client.Blocks.UpdateAsync(blockId, new BreadcrumbUpdateBlock());
+
+            blocks = await _client.Blocks.RetrieveChildrenAsync(pageId);
+            blocks.Results.Should().HaveCount(1);
+
+            // cleanup
+            var tasks = blocks.Results.Select(x => _client.Blocks.DeleteAsync(x.Id));
+            await Task.WhenAll(tasks);
+        }
+    }
+}