diff --git a/csharp/Platform.Data.Doublets.Xml.Exporter/Platform.Data.Doublets.Xml.Exporter.csproj b/csharp/Platform.Data.Doublets.Xml.Exporter/Platform.Data.Doublets.Xml.Exporter.csproj
index 091d147..5b66b16 100644
--- a/csharp/Platform.Data.Doublets.Xml.Exporter/Platform.Data.Doublets.Xml.Exporter.csproj
+++ b/csharp/Platform.Data.Doublets.Xml.Exporter/Platform.Data.Doublets.Xml.Exporter.csproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net6.0</TargetFramework>
+        <TargetFramework>net8.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
     </PropertyGroup>
diff --git a/csharp/Platform.Data.Doublets.Xml.Importer/Platform.Data.Doublets.Xml.Importer.csproj b/csharp/Platform.Data.Doublets.Xml.Importer/Platform.Data.Doublets.Xml.Importer.csproj
index 091d147..5b66b16 100644
--- a/csharp/Platform.Data.Doublets.Xml.Importer/Platform.Data.Doublets.Xml.Importer.csproj
+++ b/csharp/Platform.Data.Doublets.Xml.Importer/Platform.Data.Doublets.Xml.Importer.csproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net6.0</TargetFramework>
+        <TargetFramework>net8.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
     </PropertyGroup>
diff --git a/csharp/Platform.Data.Doublets.Xml/XmlExporter.cs b/csharp/Platform.Data.Doublets.Xml/XmlExporter.cs
index 8dc11b3..48d3ca2 100644
--- a/csharp/Platform.Data.Doublets.Xml/XmlExporter.cs
+++ b/csharp/Platform.Data.Doublets.Xml/XmlExporter.cs
@@ -80,7 +80,7 @@ private void ExportElement(XmlWriter xmlWriter, TLinkAddress documentLinkAddress
         private void ExportAttribute(XmlWriter xmlWriter, TLinkAddress attributeLinkAddress)
         {
             var attribute = _storage.GetAttribute(attributeLinkAddress);
-            xmlWriter.WriteAttributeString(attribute.Prefix, attribute.LocalName, null, attribute.Value);
+            xmlWriter.WriteAttributeString(attribute.Prefix, attribute.LocalName, attribute.Namespaceuri, attribute.Value);
         }
 
         private void ExportTextNode(XmlWriter xmlWriter, TLinkAddress textNodeLinkAddress)