diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0b21e82bc..ec51315b6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 - TBD
 
+# 10.0.3
+
+- Added default ctor to JwtHeader and decorated it with `[JsonConstructor]`
+
 # 10.0.2
 
 - Disallowed Encode(payload) with AddClaim(s)
diff --git a/JWT.sln b/JWT.sln
index a694636cd..e790a53f0 100644
--- a/JWT.sln
+++ b/JWT.sln
@@ -55,7 +55,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{C86A941F-F65
 		src\Directory.Build.targets = src\Directory.Build.targets
 	EndProjectSection
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "JWT.Tests.Net70", "tests\JWT.Tests.Net70\JWT.Tests.Net70.csproj", "{D7F24AC9-D178-4BAB-BF93-4BAD8028416D}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JWT.Tests.Net70", "tests\JWT.Tests.Net70\JWT.Tests.Net70.csproj", "{D7F24AC9-D178-4BAB-BF93-4BAD8028416D}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
diff --git a/src/JWT/Builder/JwtHeader.cs b/src/JWT/Builder/JwtHeader.cs
index 0d67df5f7..fb41f80a4 100644
--- a/src/JWT/Builder/JwtHeader.cs
+++ b/src/JWT/Builder/JwtHeader.cs
@@ -11,6 +11,12 @@ namespace JWT.Builder
     /// </summary>
     public class JwtHeader
     {
+#if MODERN_DOTNET
+        [System.Text.Json.Serialization.JsonConstructor]
+        public JwtHeader()
+        {
+        }
+#endif        
         [JsonProperty("typ")]
 #if MODERN_DOTNET
         [JsonPropertyName("typ")]
@@ -53,4 +59,4 @@ public class JwtHeader
 #endif
         public string X5t { get; set; }
     }
-}
\ No newline at end of file
+}
diff --git a/src/JWT/JWT.csproj b/src/JWT/JWT.csproj
index 579726def..ef58d7e20 100644
--- a/src/JWT/JWT.csproj
+++ b/src/JWT/JWT.csproj
@@ -20,13 +20,16 @@
     <Authors>Alexander Batishchev, John Sheehan, Michael Lehenbauer</Authors>
     <PackageTags>jwt;json;authorization</PackageTags>
     <PackageLicenseExpression>CC0-1.0</PackageLicenseExpression>
-    <Version>10.0.2</Version>
-    <FileVersion>10.0.0.0</FileVersion>
-    <AssemblyVersion>10.0.0.0</AssemblyVersion>
     <RootNamespace>JWT</RootNamespace>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
   </PropertyGroup>
 
+  <PropertyGroup>
+    <Version>10.0.3</Version>
+    <FileVersion>10.0.0.0</FileVersion>
+    <AssemblyVersion>10.0.0.0</AssemblyVersion>
+  </PropertyGroup>
+
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
     <DefineConstants>$(DefineConstants);TRACE;DEBUG</DefineConstants>
     <OutputPath>bin\Debug\</OutputPath>
diff --git a/tests/JWT.Tests.Common/Builder/JwtBuilderEncodeTests.cs b/tests/JWT.Tests.Common/Builder/JwtBuilderEncodeTests.cs
index e26a3d804..9a6d16992 100644
--- a/tests/JWT.Tests.Common/Builder/JwtBuilderEncodeTests.cs
+++ b/tests/JWT.Tests.Common/Builder/JwtBuilderEncodeTests.cs
@@ -270,13 +270,6 @@ public void Encode_Should_Throw_NotSupportedException_When_Using_EncodePayload_W
                   .Throw<NotSupportedException>("because using both Encode(payload) and AddClaims() is not supported");
         }
         
-        /// <summary>
-        /// Copied from: https://stackoverflow.com/a/7077620/2890855
-        /// </summary>
-        /// <returns></returns>
-        private static bool IsRunningOnMono() => 
-            Type.GetType("Mono.Runtime") is not null;
-        
         [TestMethod]
         public void Encode_Should_Return_Token_With_Custom_Extra_Headers_Full_Payload2()
         {
diff --git a/tests/JWT.Tests.Common/JwtHeaderTests.cs b/tests/JWT.Tests.Common/JwtHeaderTests.cs
new file mode 100644
index 000000000..a9444723e
--- /dev/null
+++ b/tests/JWT.Tests.Common/JwtHeaderTests.cs
@@ -0,0 +1,30 @@
+using FluentAssertions;
+using JWT.Builder;
+using JWT.Serializers;
+using JWT.Tests.Models;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace JWT.Tests
+{
+    [TestClass]
+    public class JwtHeaderTests
+    {
+        [TestMethod]
+        public void JwtHeader_Should_Be_Serializable()
+        {
+            const string token = TestData.TokenByAsymmetricAlgorithm;
+
+            var serializer = new DefaultJsonSerializerFactory().Create();
+            var urlEncoder = new JwtBase64UrlEncoder();
+            var decoder = new JwtDecoder(serializer, urlEncoder);
+
+            var expected = decoder.DecodeHeader<JwtHeader>(token);
+            expected.Should().NotBeNull();
+
+            var serializedHeader = serializer.Serialize(expected);
+            var actual = serializer.Deserialize<JwtHeader>(serializedHeader);
+            
+            actual.Should().BeEquivalentTo(expected);
+        }
+    }
+}