diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 6df3619dd..61d5407a0 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -50,9 +50,9 @@
       <Uri>https://github.com/dotnet/toolset</Uri>
       <Sha>451276038744a1883f8a9f15206ecef734c0c21c</Sha>
     </Dependency>
-    <Dependency Name="NETStandard.Library" Version="2.1.0-prerelease.19177.2">
+    <Dependency Name="NETStandard.Library" Version="2.1.0-prerelease.19178.1">
       <Uri>https://github.com/dotnet/standard</Uri>
-      <Sha>95b8ab66649877d199c425c52d60b9b46a839d60</Sha>
+      <Sha>c8e24b1df4c4f51663c009e190d639adf22c5e79</Sha>
     </Dependency>
     <Dependency Name="Microsoft.DotNet.MSBuildSdkResolver" Version="3.0.100-preview4.19111.1">
       <Uri>https://github.com/dotnet/cli</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index 9f128d8c5..8fd1ef63e 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -37,7 +37,7 @@
     <MicrosoftNETCoreDotNetHostResolverPackageVersion>$(MicrosoftNETCoreAppPackageVersion)</MicrosoftNETCoreDotNetHostResolverPackageVersion>
   </PropertyGroup>
   <PropertyGroup>
-    <NETStandardLibraryPackageVersion>2.1.0-prerelease.19177.2</NETStandardLibraryPackageVersion>
+    <NETStandardLibraryPackageVersion>2.1.0-prerelease.19178.1</NETStandardLibraryPackageVersion>
     <!-- Use a different property name here, as NETStandardLibraryPackageVersion is also set by targets in the NETStandard.Library package,
          which ends up overriding the value set here. -->
     <NETSTandardTargetingPackVersion>$(NETStandardLibraryPackageVersion)</NETSTandardTargetingPackVersion>