diff --git a/eng/Versions.props b/eng/Versions.props
index 41a02873512..32dc62e8c26 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -2,7 +2,7 @@
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <VersionPrefix>4.8.0</VersionPrefix>
-    <PreReleaseVersionLabel>prerelease</PreReleaseVersionLabel>
+    <PreReleaseVersionLabel>preview4</PreReleaseVersionLabel>
     <AssemblyVersion>4.0.0.0</AssemblyVersion>
   </PropertyGroup>
   <!-- NuGet Package Versions -->
diff --git a/src/Microsoft.DotNet.Wpf/src/System.Xaml/System.Xaml.csproj b/src/Microsoft.DotNet.Wpf/src/System.Xaml/System.Xaml.csproj
index d8de8227f7a..98e6d0aaa06 100644
--- a/src/Microsoft.DotNet.Wpf/src/System.Xaml/System.Xaml.csproj
+++ b/src/Microsoft.DotNet.Wpf/src/System.Xaml/System.Xaml.csproj
@@ -15,7 +15,7 @@
     <PackageRuntimeIdentifierPrefix Condition="'$(Platform)'!='AnyCPU'">runtime.win-$(Platform)</PackageRuntimeIdentifierPrefix>
     <PackageRuntimeIdentifierPrefix Condition="'$(Platform)'=='AnyCPU'">runtime.win-x86</PackageRuntimeIdentifierPrefix>
     
-    <PackageId>$(PackageRuntimeIdentifierPrefix).Microsoft.DotNet.Wpf.Private</PackageId>
+    <PackageId>$(PackageRuntimeIdentifierPrefix).Microsoft.DotNet.Wpf.Private-$(PreReleaseVersionLabel)</PackageId>
     <Product>Microsoft.DotNet.Wpf</Product>
   </PropertyGroup>