diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 6a9c6c9fab..00e0cfc94b 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -113,9 +113,9 @@
       <Uri>https://github.com/dotnet/corefx</Uri>
       <Sha>d341fd37dcb2c22e382adccdc06770cf8f160577</Sha>
     </Dependency>
-    <Dependency Name="NETStandard.Library" Version="2.1.0-prerelease.19427.3">
+    <Dependency Name="NETStandard.Library" Version="2.1.0-prerelease.19428.3">
       <Uri>https://github.com/dotnet/standard</Uri>
-      <Sha>c1354a772ad55fc61e844591be899ebcb25e6777</Sha>
+      <Sha>40f44d980eb9ac791f94a275dec19c3f1a444839</Sha>
     </Dependency>
     <Dependency Name="Microsoft.NETCore.Runtime.CoreCLR" Version="3.0.0-rc1.19427.10">
       <Uri>https://github.com/dotnet/coreclr</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index a0ec558608..6e4616a863 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -70,7 +70,7 @@
     <SystemThreadingAccessControlVersion>4.6.0-rc1.19420.10</SystemThreadingAccessControlVersion>
     <SystemWindowsExtensionsPackageVersion>4.6.0-rc1.19420.10</SystemWindowsExtensionsPackageVersion>
     <!-- standard -->
-    <NETStandardLibraryPackageVersion>2.1.0-prerelease.19427.3</NETStandardLibraryPackageVersion>
+    <NETStandardLibraryPackageVersion>2.1.0-prerelease.19428.3</NETStandardLibraryPackageVersion>
     <!-- coreclr -->
     <MicrosoftNETCoreRuntimeCoreCLRPackageVersion>3.0.0-rc1.19427.10</MicrosoftNETCoreRuntimeCoreCLRPackageVersion>
     <!-- winforms -->