diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index d1c59455a..0216c135f 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -2,17 +2,17 @@
 <Dependencies>
   <ProductDependencies>
     <!-- Winforms / WPF -->
-    <Dependency Name="Microsoft.WindowsDesktop.App" Version="3.1.0-preview1.19467.7">
+    <Dependency Name="Microsoft.WindowsDesktop.App" Version="3.1.0-preview1.19470.5">
       <Uri>https://github.com/dotnet/core-setup</Uri>
-      <Sha>1e19b8c0d63fe23da7bdd9625ca51c6bd2d1bab2</Sha>
+      <Sha>b0ea03ec3af2a9c388f718fbb4978984ab339953</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.App" Version="3.1.0-preview1.19467.7">
+    <Dependency Name="Microsoft.NETCore.App" Version="3.1.0-preview1.19470.5">
       <Uri>https://github.com/dotnet/core-setup</Uri>
-      <Sha>1e19b8c0d63fe23da7bdd9625ca51c6bd2d1bab2</Sha>
+      <Sha>b0ea03ec3af2a9c388f718fbb4978984ab339953</Sha>
     </Dependency>
-    <Dependency Name="NETStandard.Library.Ref" Version="2.1.0-preview1.19467.7">
+    <Dependency Name="NETStandard.Library.Ref" Version="2.1.0-preview1.19470.5">
       <Uri>https://github.com/dotnet/core-setup</Uri>
-      <Sha>1e19b8c0d63fe23da7bdd9625ca51c6bd2d1bab2</Sha>
+      <Sha>b0ea03ec3af2a9c388f718fbb4978984ab339953</Sha>
     </Dependency>
     <Dependency Name="Microsoft.AspNetCore.App.Ref" Version="3.0.0-rc2.19462.2">
       <Uri>https://github.com/aspnet/AspNetCore</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index 3a2abe765..462ede6a2 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -44,7 +44,7 @@
     <MicrosoftNETBuildExtensionsPackageVersion>$(MicrosoftNETSdkPackageVersion)</MicrosoftNETBuildExtensionsPackageVersion>
   </PropertyGroup>
   <PropertyGroup>
-    <MicrosoftNETCoreAppPackageVersion>3.1.0-preview1.19467.7</MicrosoftNETCoreAppPackageVersion>
+    <MicrosoftNETCoreAppPackageVersion>3.1.0-preview1.19470.5</MicrosoftNETCoreAppPackageVersion>
     <MicrosoftNETCoreAppInternalPackageVersion>$(MicrosoftNETCoreAppPackageVersion)</MicrosoftNETCoreAppInternalPackageVersion>
     <MicrosoftNETCoreDotNetAppHostPackageVersion>$(MicrosoftNETCoreAppPackageVersion)</MicrosoftNETCoreDotNetAppHostPackageVersion>
     <MicrosoftNETCoreDotNetHostResolverPackageVersion>$(MicrosoftNETCoreAppPackageVersion)</MicrosoftNETCoreDotNetHostResolverPackageVersion>
@@ -52,11 +52,11 @@
     <HostFxrVersion>$(MicrosoftNETCoreAppPackageVersion)</HostFxrVersion>
     <NetCoreAppTargetingPackVersion>$(MicrosoftNETCoreAppPackageVersion)</NetCoreAppTargetingPackVersion>
     <NetCoreAppHostPackVersion>$(MicrosoftNETCoreAppPackageVersion)</NetCoreAppHostPackVersion>
-    <NETStandardLibraryRefPackageVersion>2.1.0-preview1.19467.7</NETStandardLibraryRefPackageVersion>
+    <NETStandardLibraryRefPackageVersion>2.1.0-preview1.19470.5</NETStandardLibraryRefPackageVersion>
     <WindowsDesktopTargetingPackVersion>$(MicrosoftNETCoreAppPackageVersion)</WindowsDesktopTargetingPackVersion>
     <AspNetCoreVersion>$(MicrosoftAspNetCoreAppRuntimeWinX64PackageVersion)</AspNetCoreVersion>
     <AspNetTargetingPackVersion>$(MicrosoftAspNetCoreAppRefPackageVersion)</AspNetTargetingPackVersion>
-    <MicrosoftWindowsDesktopAppPackageVersion>3.1.0-preview1.19467.7</MicrosoftWindowsDesktopAppPackageVersion>
+    <MicrosoftWindowsDesktopAppPackageVersion>3.1.0-preview1.19470.5</MicrosoftWindowsDesktopAppPackageVersion>
     <MicrosoftWindowsDesktopPackageVersion>$(MicrosoftWindowsDesktopAppPackageVersion)</MicrosoftWindowsDesktopPackageVersion>
   </PropertyGroup>
   <PropertyGroup>