diff --git a/Directory.Packages.props b/Directory.Packages.props
index 17e0bbb42d..72cf036bf9 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -133,6 +133,7 @@
     <PackageVersion Include="System.ComponentModel.EventBasedAsync" Version="4.0.11" />
     <PackageVersion Include="System.Data.SqlClient" Version="4.8.6" />
     <PackageVersion Include="System.Diagnostics.Debug" Version="4.3.0" />
+    <PackageVersion Include="System.Formats.Asn1" Version="6.0.1" />
     <PackageVersion Include="System.Drawing.Common" Version="4.7.2" />
     <PackageVersion Include="System.Linq.Expressions" Version="4.3.0" />
     <PackageVersion Include="System.Net.Http" Version="4.3.4" />
diff --git a/src/NuGet.Protocol.Catalog/NuGet.Protocol.Catalog.csproj b/src/NuGet.Protocol.Catalog/NuGet.Protocol.Catalog.csproj
index 40a33099d3..2e62b6776c 100644
--- a/src/NuGet.Protocol.Catalog/NuGet.Protocol.Catalog.csproj
+++ b/src/NuGet.Protocol.Catalog/NuGet.Protocol.Catalog.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <Import Project="..\..\SdkProjects.props" />
 
@@ -11,6 +11,7 @@
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" />
     <PackageReference Include="Newtonsoft.Json" />
     <PackageReference Include="NuGet.Protocol" />
+    <PackageReference Include="System.Formats.Asn1" />
   </ItemGroup>
 
 </Project>
\ No newline at end of file
diff --git a/src/NuGetGallery.Core/NuGetGallery.Core.csproj b/src/NuGetGallery.Core/NuGetGallery.Core.csproj
index bf0f7470e7..aebb0f6a49 100644
--- a/src/NuGetGallery.Core/NuGetGallery.Core.csproj
+++ b/src/NuGetGallery.Core/NuGetGallery.Core.csproj
@@ -47,6 +47,7 @@
     <PackageReference Include="EntityFramework" />
     <PackageReference Include="NuGet.Packaging" />
     <PackageReference Include="NuGet.Services.FeatureFlags" />
+    <PackageReference Include="System.Formats.Asn1" />
   </ItemGroup>
   
   <ItemGroup Condition="'$(TargetFramework)' == 'net472'">
diff --git a/src/Validation.Common.Job/Validation.Common.Job.csproj b/src/Validation.Common.Job/Validation.Common.Job.csproj
index 7880568ea6..b3927d9693 100644
--- a/src/Validation.Common.Job/Validation.Common.Job.csproj
+++ b/src/Validation.Common.Job/Validation.Common.Job.csproj
@@ -29,6 +29,7 @@
     <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" />
     <PackageReference Include="NuGet.Packaging" />
     <PackageReference Include="WindowsAzure.Storage" />
+    <PackageReference Include="System.Formats.Asn1" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net472'">