diff --git a/README.md b/README.md
index 603d5f9da..6b9609143 100644
--- a/README.md
+++ b/README.md
@@ -99,6 +99,12 @@ Refit 6 makes [System.Text.Json](https://docs.microsoft.com/en-us/dotnet/standar
 
 `IContentSerializer` was renamed to `IHttpContentSerializer` to better reflect its purpose. Additionally, two of its methods were renamed, `SerializeAsync<T>` -> `ToHttpContent<T>` and `DeserializeAsync<T>` -> `FromHttpContentAsync<T>`. Any existing implementations of these will need to be updated, though the changes should be minor.
 
+##### Updates in 6.3
+
+Refit 6.3 splits out the XML serialization via `XmlContentSerializer` into a separate package, `Refit.Xml`. This
+is to reduce the dependency size when using Refit with Web Assembly (WASM) applications. If you require XML, add a reference
+to `Refit.Xml`.
+
 ### API Attributes
 
 Every method must have an HTTP attribute that provides the request method and
diff --git a/Refit.Tests/Refit.Tests.csproj b/Refit.Tests/Refit.Tests.csproj
index 47a27ffe9..67b38d144 100644
--- a/Refit.Tests/Refit.Tests.csproj
+++ b/Refit.Tests/Refit.Tests.csproj
@@ -23,6 +23,7 @@
     <PackageReference Include="RichardSzalay.MockHttp" Version="6.0.0" />
     <ProjectReference Include="..\Refit.HttpClientFactory\Refit.HttpClientFactory.csproj" />
     <ProjectReference Include="..\Refit.Newtonsoft.Json\Refit.Newtonsoft.Json.csproj" />
+    <ProjectReference Include="..\Refit.Xml\Refit.Xml.csproj" />
     <ProjectReference Include="..\InterfaceStubGenerator.Roslyn38\InterfaceStubGenerator.Roslyn38.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="true" />
     <ProjectReference Include="..\InterfaceStubGenerator.Roslyn40\InterfaceStubGenerator.Roslyn40.csproj" />
   </ItemGroup>
diff --git a/Refit.Xml/Refit.Xml.csproj b/Refit.Xml/Refit.Xml.csproj
new file mode 100644
index 000000000..4a7bcb144
--- /dev/null
+++ b/Refit.Xml/Refit.Xml.csproj
@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <Product>Refit Xml Serializer ($(TargetFramework))</Product>
+    <Description>Refit Serializers for Xml</Description>
+    <TargetFrameworks>net6.0;net5.0;netstandard2.0;net461</TargetFrameworks>
+    <GenerateDocumentationFile Condition=" '$(Configuration)' == 'Release' ">true</GenerateDocumentationFile>
+    <RootNamespace>Refit</RootNamespace>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>  
+
+  <ItemGroup Condition="'$(TargetFramework)' == 'net461'">
+    <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies"
+                      Version="1.0.2"
+                      PrivateAssets="All" />
+    <Reference Include="System.Web" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Refit\Refit.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/Refit/XmlContentSerializer.cs b/Refit.Xml/XmlContentSerializer.cs
similarity index 100%
rename from Refit/XmlContentSerializer.cs
rename to Refit.Xml/XmlContentSerializer.cs
diff --git a/Refit.sln b/Refit.sln
index b275022a3..5973b1e3c 100644
--- a/Refit.sln
+++ b/Refit.sln
@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 16
-VisualStudioVersion = 16.0.28621.142
+# Visual Studio Version 17
+VisualStudioVersion = 17.2.32207.482
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{4F1C8991-7097-4471-A9A6-A72005AB594D}"
 	ProjectSection(SolutionItems) = preProject
@@ -29,6 +29,8 @@ Project("{D954291E-2A0B-460D-934E-DC6B0785DB48}") = "InterfaceStubGenerator.Shar
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "InterfaceStubGenerator.Roslyn40", "InterfaceStubGenerator.Roslyn40\InterfaceStubGenerator.Roslyn40.csproj", "{A4B61169-3314-41DB-8156-BE9677C90C9F}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Refit.Xml", "Refit.Xml\Refit.Xml.csproj", "{C4E38B33-3D17-47A7-A47F-8F3900F07499}"
+EndProject
 Global
 	GlobalSection(SharedMSBuildProjectFiles) = preSolution
 		InterfaceStubGenerator.Shared\InterfaceStubGenerator.Shared.projitems*{72869789-0310-4916-9a41-20d16a01c1b8}*SharedItemsImports = 5
@@ -142,6 +144,22 @@ Global
 		{A4B61169-3314-41DB-8156-BE9677C90C9F}.Release|x64.Build.0 = Release|Any CPU
 		{A4B61169-3314-41DB-8156-BE9677C90C9F}.Release|x86.ActiveCfg = Release|Any CPU
 		{A4B61169-3314-41DB-8156-BE9677C90C9F}.Release|x86.Build.0 = Release|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Debug|ARM.ActiveCfg = Debug|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Debug|ARM.Build.0 = Debug|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Debug|x64.Build.0 = Debug|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Debug|x86.Build.0 = Debug|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Release|Any CPU.Build.0 = Release|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Release|ARM.ActiveCfg = Release|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Release|ARM.Build.0 = Release|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Release|x64.ActiveCfg = Release|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Release|x64.Build.0 = Release|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Release|x86.ActiveCfg = Release|Any CPU
+		{C4E38B33-3D17-47A7-A47F-8F3900F07499}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/Refit/Properties/AssemblyInfo.cs b/Refit/Properties/AssemblyInfo.cs
index c2b404f5f..b1b7307fd 100644
--- a/Refit/Properties/AssemblyInfo.cs
+++ b/Refit/Properties/AssemblyInfo.cs
@@ -3,3 +3,4 @@
 [assembly: InternalsVisibleTo("Refit.Tests, PublicKey=00240000048000009400000006020000002400005253413100040000010001009dc017250415a0d51fddb74de84257c388028f04893673ca5c8f9e7145aea2b11443cb49dd79386d2255179a79ec516466b621f77e43386e711b775f77bb0e4b217f8c208c054e5f515ae33ee76bac1b56cdc20e1c151cf026a9b7f8362f1963825e546e16b360dfc63fe670403c9d6152c24491dd5dfb9ff68fe102ef3e1aed")]
 [assembly: InternalsVisibleTo("Refit.HttpClientFactory, PublicKey=00240000048000009400000006020000002400005253413100040000010001009dc017250415a0d51fddb74de84257c388028f04893673ca5c8f9e7145aea2b11443cb49dd79386d2255179a79ec516466b621f77e43386e711b775f77bb0e4b217f8c208c054e5f515ae33ee76bac1b56cdc20e1c151cf026a9b7f8362f1963825e546e16b360dfc63fe670403c9d6152c24491dd5dfb9ff68fe102ef3e1aed")]
 [assembly: InternalsVisibleTo("Refit.Newtonsoft.Json, PublicKey=00240000048000009400000006020000002400005253413100040000010001009dc017250415a0d51fddb74de84257c388028f04893673ca5c8f9e7145aea2b11443cb49dd79386d2255179a79ec516466b621f77e43386e711b775f77bb0e4b217f8c208c054e5f515ae33ee76bac1b56cdc20e1c151cf026a9b7f8362f1963825e546e16b360dfc63fe670403c9d6152c24491dd5dfb9ff68fe102ef3e1aed")]
+[assembly: InternalsVisibleTo("Refit.Xml, PublicKey=00240000048000009400000006020000002400005253413100040000010001009dc017250415a0d51fddb74de84257c388028f04893673ca5c8f9e7145aea2b11443cb49dd79386d2255179a79ec516466b621f77e43386e711b775f77bb0e4b217f8c208c054e5f515ae33ee76bac1b56cdc20e1c151cf026a9b7f8362f1963825e546e16b360dfc63fe670403c9d6152c24491dd5dfb9ff68fe102ef3e1aed")]
diff --git a/version.json b/version.json
index 790c870b4..aa3467eaf 100644
--- a/version.json
+++ b/version.json
@@ -1,5 +1,5 @@
 {
-  "version": "6.2",
+  "version": "6.3",
   "publicReleaseRefSpec": [
     "^refs/heads/main$", // we release out of main
     "^refs/heads/rel/v\\d+\\.\\d+" // we also release branches starting with vN.N