diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 0582337ac..66bfcd15a 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -2,33 +2,33 @@
 <Dependencies>
   <ProductDependencies>
     <!-- Winforms / WPF -->
-    <Dependency Name="Microsoft.WindowsDesktop.App" Version="3.1.0-preview1.19504.13">
+    <Dependency Name="Microsoft.WindowsDesktop.App" Version="3.1.0-preview1.19504.15">
       <Uri>https://github.com/dotnet/core-setup</Uri>
-      <Sha>fd1162d3db7db9c79bf01d32604862f4bee25b96</Sha>
+      <Sha>ea8a25eb0679dc4d940623688189885086286adc</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.WindowsDesktop.App.Runtime.win-x64" Version="3.1.0-preview1.19504.13">
+    <Dependency Name="Microsoft.WindowsDesktop.App.Runtime.win-x64" Version="3.1.0-preview1.19504.15">
       <Uri>https://github.com/dotnet/core-setup</Uri>
-      <Sha>fd1162d3db7db9c79bf01d32604862f4bee25b96</Sha>
+      <Sha>ea8a25eb0679dc4d940623688189885086286adc</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.App" Version="3.1.0-preview1.19504.13">
+    <Dependency Name="Microsoft.NETCore.App" Version="3.1.0-preview1.19504.15">
       <Uri>https://github.com/dotnet/core-setup</Uri>
-      <Sha>fd1162d3db7db9c79bf01d32604862f4bee25b96</Sha>
+      <Sha>ea8a25eb0679dc4d940623688189885086286adc</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.App.Ref" Version="3.1.0-preview1.19504.13">
+    <Dependency Name="Microsoft.NETCore.App.Ref" Version="3.1.0-preview1.19504.15">
       <Uri>https://github.com/dotnet/core-setup</Uri>
-      <Sha>fd1162d3db7db9c79bf01d32604862f4bee25b96</Sha>
+      <Sha>ea8a25eb0679dc4d940623688189885086286adc</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.DotNetAppHost" Version="3.1.0-preview1.19504.13">
+    <Dependency Name="Microsoft.NETCore.DotNetAppHost" Version="3.1.0-preview1.19504.15">
       <Uri>https://github.com/dotnet/core-setup</Uri>
-      <Sha>fd1162d3db7db9c79bf01d32604862f4bee25b96</Sha>
+      <Sha>ea8a25eb0679dc4d940623688189885086286adc</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.DotNetHostResolver" Version="3.1.0-preview1.19504.13">
+    <Dependency Name="Microsoft.NETCore.DotNetHostResolver" Version="3.1.0-preview1.19504.15">
       <Uri>https://github.com/dotnet/core-setup</Uri>
-      <Sha>fd1162d3db7db9c79bf01d32604862f4bee25b96</Sha>
+      <Sha>ea8a25eb0679dc4d940623688189885086286adc</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.App.Runtime.win-x64" Version="3.1.0-preview1.19504.13">
+    <Dependency Name="Microsoft.NETCore.App.Runtime.win-x64" Version="3.1.0-preview1.19504.15">
       <Uri>https://github.com/dotnet/core-setup</Uri>
-      <Sha>fd1162d3db7db9c79bf01d32604862f4bee25b96</Sha>
+      <Sha>ea8a25eb0679dc4d940623688189885086286adc</Sha>
     </Dependency>
     <!-- No new netstandard.library planned for 3.1 timeframe at this time. -->
     <Dependency Name="NETStandard.Library.Ref" Version="2.1.0" Pinned="true">
@@ -36,9 +36,9 @@
       <Sha>7d57652f33493fa022125b7f63aad0d70c52d810</Sha>
     </Dependency>
     <!-- Used to pull in the feed for Microsoft.NETCore.Platforms, but not referenced directly -->
-    <Dependency Name="Microsoft.NETCore.Platforms" Version="3.1.0-preview1.19504.1" CoherentParentDependency="Microsoft.NetCore.App">
+    <Dependency Name="Microsoft.NETCore.Platforms" Version="3.1.0-preview1.19504.6" CoherentParentDependency="Microsoft.NetCore.App">
       <Uri>https://github.com/dotnet/corefx</Uri>
-      <Sha>ba3d206594ca389b309d826604b28410f05f19e7</Sha>
+      <Sha>f969dd277b3288d0ee07d10dacc5dc3613030674</Sha>
     </Dependency>
     <Dependency Name="Microsoft.AspNetCore.App.Ref" Version="3.1.0-preview1.19504.2">
       <Uri>https://github.com/aspnet/AspNetCore</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index 6965c6027..c1298ce05 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -56,22 +56,22 @@
     <MicrosoftNETBuildExtensionsPackageVersion>$(MicrosoftNETSdkPackageVersion)</MicrosoftNETBuildExtensionsPackageVersion>
   </PropertyGroup>
   <PropertyGroup>
-    <MicrosoftNETCoreAppRuntimewinx64PackageVersion>3.1.0-preview1.19504.13</MicrosoftNETCoreAppRuntimewinx64PackageVersion>
-    <MicrosoftNETCoreAppPackageVersion>3.1.0-preview1.19504.13</MicrosoftNETCoreAppPackageVersion>
+    <MicrosoftNETCoreAppRuntimewinx64PackageVersion>3.1.0-preview1.19504.15</MicrosoftNETCoreAppRuntimewinx64PackageVersion>
+    <MicrosoftNETCoreAppPackageVersion>3.1.0-preview1.19504.15</MicrosoftNETCoreAppPackageVersion>
     <MicrosoftNETCoreAppInternalPackageVersion>$(MicrosoftNETCoreAppPackageVersion)</MicrosoftNETCoreAppInternalPackageVersion>
-    <MicrosoftNETCoreDotNetAppHostPackageVersion>3.1.0-preview1.19504.13</MicrosoftNETCoreDotNetAppHostPackageVersion>
-    <MicrosoftNETCoreDotNetHostResolverPackageVersion>3.1.0-preview1.19504.13</MicrosoftNETCoreDotNetHostResolverPackageVersion>
+    <MicrosoftNETCoreDotNetAppHostPackageVersion>3.1.0-preview1.19504.15</MicrosoftNETCoreDotNetAppHostPackageVersion>
+    <MicrosoftNETCoreDotNetHostResolverPackageVersion>3.1.0-preview1.19504.15</MicrosoftNETCoreDotNetHostResolverPackageVersion>
     <SharedHostVersion>$(MicrosoftNETCoreDotNetHostResolverPackageVersion)</SharedHostVersion>
     <HostFxrVersion>$(MicrosoftNETCoreDotNetAppHostPackageVersion)</HostFxrVersion>
-    <MicrosoftNETCoreAppRefPackageVersion>3.1.0-preview1.19504.13</MicrosoftNETCoreAppRefPackageVersion>
+    <MicrosoftNETCoreAppRefPackageVersion>3.1.0-preview1.19504.15</MicrosoftNETCoreAppRefPackageVersion>
     <NetCoreAppTargetingPackVersion>$(MicrosoftNETCoreAppRefPackageVersion)</NetCoreAppTargetingPackVersion>
     <NetCoreAppHostPackVersion>$(MicrosoftNETCoreDotNetAppHostPackageVersion)</NetCoreAppHostPackVersion>
     <NETStandardLibraryRefPackageVersion>2.1.0</NETStandardLibraryRefPackageVersion>
     <WindowsDesktopTargetingPackVersion>$(MicrosoftNETCoreAppRefPackageVersion)</WindowsDesktopTargetingPackVersion>
     <AspNetCoreVersion>$(MicrosoftAspNetCoreAppRuntimeWinX64PackageVersion)</AspNetCoreVersion>
     <AspNetTargetingPackVersion>$(MicrosoftAspNetCoreAppRefPackageVersion)</AspNetTargetingPackVersion>
-    <MicrosoftWindowsDesktopAppRuntimewinx64PackageVersion>3.1.0-preview1.19504.13</MicrosoftWindowsDesktopAppRuntimewinx64PackageVersion>
-    <MicrosoftWindowsDesktopAppPackageVersion>3.1.0-preview1.19504.13</MicrosoftWindowsDesktopAppPackageVersion>
+    <MicrosoftWindowsDesktopAppRuntimewinx64PackageVersion>3.1.0-preview1.19504.15</MicrosoftWindowsDesktopAppRuntimewinx64PackageVersion>
+    <MicrosoftWindowsDesktopAppPackageVersion>3.1.0-preview1.19504.15</MicrosoftWindowsDesktopAppPackageVersion>
     <MicrosoftWindowsDesktopPackageVersion>$(MicrosoftWindowsDesktopAppPackageVersion)</MicrosoftWindowsDesktopPackageVersion>
   </PropertyGroup>
   <PropertyGroup>