diff --git a/MessagePack.NodaTime.Tests/ObjectTesting.cs b/MessagePack.NodaTime.Tests/ContractlessTests.cs
similarity index 98%
rename from MessagePack.NodaTime.Tests/ObjectTesting.cs
rename to MessagePack.NodaTime.Tests/ContractlessTests.cs
index 62d6819..6cb5821 100644
--- a/MessagePack.NodaTime.Tests/ObjectTesting.cs
+++ b/MessagePack.NodaTime.Tests/ContractlessTests.cs
@@ -17,7 +17,7 @@ public class LDT
     }
 
     [Collection("ResolverCollection")]
-    public class ObjectTesting
+    public class ContractlessTests
     {
         [Fact]
         public void AnonType()
diff --git a/MessagePack.NodaTime.Tests/Init/MessagePackTestInit.cs b/MessagePack.NodaTime.Tests/Init/MessagePackTestInit.cs
index 68f206e..bba46ac 100644
--- a/MessagePack.NodaTime.Tests/Init/MessagePackTestInit.cs
+++ b/MessagePack.NodaTime.Tests/Init/MessagePackTestInit.cs
@@ -12,8 +12,9 @@ public ResolverFixture()
         {
             var resolver = CompositeResolver.Create(new[] {
                 BuiltinResolver.Instance,
-                NodatimeResolver.Instance,
                 AttributeFormatterResolver.Instance,
+                SourceGeneratedFormatterResolver.Instance,
+                NodatimeResolver.Instance,
                 DynamicEnumAsStringResolver.Instance,
                 ContractlessStandardResolver.Instance
             }
diff --git a/MessagePack.NodaTime.Tests/SourceGeneratedContractTests.cs b/MessagePack.NodaTime.Tests/SourceGeneratedContractTests.cs
new file mode 100644
index 0000000..507ed5b
--- /dev/null
+++ b/MessagePack.NodaTime.Tests/SourceGeneratedContractTests.cs
@@ -0,0 +1,53 @@
+// Copyright (c) ARK LTD. All rights reserved.
+// Licensed under the MIT License. See LICENSE in the project root for
+// license information. 
+using MessagePack;
+using MessagePack.Resolvers;
+using NodaTime;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using Xunit;
+
+namespace MessagePack.NodaTime.Tests
+{
+    [MessagePackObject]
+    public record MyClass
+    {
+        [Key(0)]
+        public LocalDateTime LocalDateTime { get; set; } = LocalDateTime.FromDateTime(DateTime.Now);
+
+        [Key(1)]
+        public Instant Instant { get; set; } = Instant.FromDateTimeUtc(DateTime.UtcNow);
+
+        [Key(2)]
+        public Period Period { get; set; } = Period.Zero;
+
+        [Key(3)]
+        public LocalDate LocalDate { get; set; } = LocalDate.FromDateTime(DateTime.Now.Date);
+
+        [Key(4)]
+        public OffsetDateTime OffsetDateTime { get; set; } = OffsetDateTime.FromDateTimeOffset(DateTimeOffset.Now);
+
+        [Key(5)]
+        public Duration Duration { get; set; } = Duration.Zero;
+
+        [Key(6)]
+        public ZonedDateTime ZonedDateTime { get; set; } = ZonedDateTime.FromDateTimeOffset(DateTimeOffset.Now);
+    }
+
+    [Collection("ResolverCollection")]
+    public class SourceGeneratedContractTests
+    {
+        [Fact]
+        public void Roundtrip()
+        {
+            var o = new MyClass { LocalDateTime = LocalDateTime.FromDateTime(DateTime.Now) };
+            var bin = MessagePackSerializer.Serialize(o);
+            var res = MessagePackSerializer.Deserialize<MyClass>(bin);
+
+            Assert.Equal(o.LocalDateTime, res.LocalDateTime); // in DateTime format due to 'abc' being DateTime object
+        }
+    }
+}
diff --git a/MessagePack.NodaTime/DurationMessagePackFormatter.cs b/MessagePack.NodaTime/DurationMessagePackFormatter.cs
index b25641a..095c884 100644
--- a/MessagePack.NodaTime/DurationMessagePackFormatter.cs
+++ b/MessagePack.NodaTime/DurationMessagePackFormatter.cs
@@ -10,6 +10,7 @@
 
 namespace MessagePack.NodaTime
 {
+    [ExcludeFormatterFromSourceGeneratedResolver]
     public sealed class DurationAsNanosecondsMessagePackFormatter : IMessagePackFormatter<Duration>
     {
         public static readonly DurationAsNanosecondsMessagePackFormatter Instance = new DurationAsNanosecondsMessagePackFormatter();
diff --git a/MessagePack.NodaTime/LocalDateMessagePackFormatter.cs b/MessagePack.NodaTime/LocalDateMessagePackFormatter.cs
index 4ae50dd..506a8dc 100644
--- a/MessagePack.NodaTime/LocalDateMessagePackFormatter.cs
+++ b/MessagePack.NodaTime/LocalDateMessagePackFormatter.cs
@@ -8,6 +8,7 @@
 namespace MessagePack.NodaTime
 {
     // Not interoperable
+    [ExcludeFormatterFromSourceGeneratedResolver]
     public sealed class LocalDateAsExtMessagePackFormatter : IMessagePackFormatter<LocalDate>
     {
         public static readonly LocalDateAsExtMessagePackFormatter Instance = new LocalDateAsExtMessagePackFormatter();
diff --git a/MessagePack.NodaTime/MessagePack.NodaTime.csproj b/MessagePack.NodaTime/MessagePack.NodaTime.csproj
index 1bbb2c3..6a3121c 100644
--- a/MessagePack.NodaTime/MessagePack.NodaTime.csproj
+++ b/MessagePack.NodaTime/MessagePack.NodaTime.csproj
@@ -19,7 +19,7 @@
 	</PropertyGroup>
 	
 	<ItemGroup>
-		<PackageReference Include="MessagePack" Version="2.5.192" />
+		<PackageReference Include="MessagePack" Version="3.0.308" />
 		<PackageReference Include="NodaTime" Version="3.2.0" />
 	</ItemGroup>
 
diff --git a/MessagePack.NodaTime/PeriodMessagePackFormatter.cs b/MessagePack.NodaTime/PeriodMessagePackFormatter.cs
index fe77487..0ad3a6f 100644
--- a/MessagePack.NodaTime/PeriodMessagePackFormatter.cs
+++ b/MessagePack.NodaTime/PeriodMessagePackFormatter.cs
@@ -10,6 +10,7 @@
 
 namespace MessagePack.NodaTime
 {
+    [ExcludeFormatterFromSourceGeneratedResolver]
     public sealed class PeriodAsIsoStringMessagePackFormatter : IMessagePackFormatter<Period?>
     {
         public static readonly PeriodAsIsoStringMessagePackFormatter Instance = new PeriodAsIsoStringMessagePackFormatter();
diff --git a/README.md b/README.md
index 890b08a..229a253 100644
--- a/README.md
+++ b/README.md
@@ -24,11 +24,12 @@ or download directly from NuGet.
 To use the NodaTime resolver, you will have to add it to the composite resolver, as shown in the example below:
 ```csharp
  CompositeResolver.RegisterAndSetAsDefault(
-            BuiltinResolver.Instance,
-            NodatimeResolver.Instance,
-            AttributeFormatterResolver.Instance,
-            DynamicEnumAsStringResolver.Instance,
-            ContractlessStandardResolver.Instance
+                BuiltinResolver.Instance,
+                AttributeFormatterResolver.Instance,
+                SourceGeneratedFormatterResolver.Instance,
+                NodatimeResolver.Instance,
+                DynamicEnumAsStringResolver.Instance,
+                ContractlessStandardResolver.Instance
             );
 ```
 ## Quick Start