diff --git a/src/libraries/Microsoft.Extensions.DependencyModel/tests/Microsoft.Extensions.DependencyModel.Tests.csproj b/src/libraries/Microsoft.Extensions.DependencyModel/tests/Microsoft.Extensions.DependencyModel.Tests.csproj
index 997904f57d4d63..fa4e2326a573fb 100644
--- a/src/libraries/Microsoft.Extensions.DependencyModel/tests/Microsoft.Extensions.DependencyModel.Tests.csproj
+++ b/src/libraries/Microsoft.Extensions.DependencyModel/tests/Microsoft.Extensions.DependencyModel.Tests.csproj
@@ -13,7 +13,7 @@
     <PackageReference Include="Microsoft.DotNet.InternalAbstractions" Version="1.0.0" />
     <PackageReference Include="FluentAssertions" Version="4.19.4" />
     <PackageReference Include="Moq" Version="$(MoqVersion)" />
-    <PackageReference Include="Microsoft.DotNet.ProjectModel" Version="1.0.0-rc2-002702" />
+    <PackageReference Include="Microsoft.DotNet.ProjectModel" Version="1.0.0-rc3-003121" />
     <!-- Upgrade the transitive dependency's version to avoid PackageTargetFallback on .NETCoreApp. -->
     <PackageReference Include="Newtonsoft.Json" Version="$(NewtonsoftJsonVersion)" />
   </ItemGroup>
diff --git a/src/libraries/System.Data.Common/tests/System.Data.Common.Tests.csproj b/src/libraries/System.Data.Common/tests/System.Data.Common.Tests.csproj
index 5bb9d46a3a8f55..4d0933db75b09a 100644
--- a/src/libraries/System.Data.Common/tests/System.Data.Common.Tests.csproj
+++ b/src/libraries/System.Data.Common/tests/System.Data.Common.Tests.csproj
@@ -118,4 +118,7 @@
     <Compile Include="$(CommonTestPath)System\Runtime\Serialization\Formatters\BinaryFormatterHelpers.cs"
              Link="Common\System\Runtime\Serialization\Formatters\BinaryFormatterHelpers.cs" />
   </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="System.Data.SqlClient" Version="$(SystemDataSqlClientVersion)" />
+  </ItemGroup>
 </Project>
diff --git a/src/libraries/System.Runtime.Serialization.Formatters/tests/System.Runtime.Serialization.Formatters.Tests.csproj b/src/libraries/System.Runtime.Serialization.Formatters/tests/System.Runtime.Serialization.Formatters.Tests.csproj
index 526780399721c7..ff7628e9ebc6a8 100644
--- a/src/libraries/System.Runtime.Serialization.Formatters/tests/System.Runtime.Serialization.Formatters.Tests.csproj
+++ b/src/libraries/System.Runtime.Serialization.Formatters/tests/System.Runtime.Serialization.Formatters.Tests.csproj
@@ -35,4 +35,7 @@
   <ItemGroup Condition="'$(TargetFramework)' == '$(NetCoreAppCurrent)'">
     <Reference Include="System.Text.Json" />
   </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="System.Data.SqlClient" Version="$(SystemDataSqlClientVersion)" />
+  </ItemGroup>
 </Project>
diff --git a/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.compatibility.json b/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.compatibility.json
index 41a7e17807e7cb..1d4238b12fbe32 100644
--- a/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.compatibility.json
+++ b/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.compatibility.json
@@ -7,6 +7,18 @@
     "any",
     "base"
   ],
+  "alpine-arm64": [
+    "alpine-arm64",
+    "alpine",
+    "linux-musl-arm64",
+    "linux-musl",
+    "linux-arm64",
+    "linux",
+    "unix-arm64",
+    "unix",
+    "any",
+    "base"
+  ],
   "alpine-x64": [
     "alpine-x64",
     "alpine",
@@ -32,6 +44,28 @@
     "any",
     "base"
   ],
+  "alpine.3.10-arm64": [
+    "alpine.3.10-arm64",
+    "alpine.3.10",
+    "alpine.3.9-arm64",
+    "alpine.3.9",
+    "alpine.3.8-arm64",
+    "alpine.3.8",
+    "alpine.3.7-arm64",
+    "alpine.3.7",
+    "alpine.3.6-arm64",
+    "alpine.3.6",
+    "alpine-arm64",
+    "alpine",
+    "linux-musl-arm64",
+    "linux-musl",
+    "linux-arm64",
+    "linux",
+    "unix-arm64",
+    "unix",
+    "any",
+    "base"
+  ],
   "alpine.3.10-x64": [
     "alpine.3.10-x64",
     "alpine.3.10",
@@ -68,6 +102,30 @@
     "any",
     "base"
   ],
+  "alpine.3.11-arm64": [
+    "alpine.3.11-arm64",
+    "alpine.3.11",
+    "alpine.3.10-arm64",
+    "alpine.3.10",
+    "alpine.3.9-arm64",
+    "alpine.3.9",
+    "alpine.3.8-arm64",
+    "alpine.3.8",
+    "alpine.3.7-arm64",
+    "alpine.3.7",
+    "alpine.3.6-arm64",
+    "alpine.3.6",
+    "alpine-arm64",
+    "alpine",
+    "linux-musl-arm64",
+    "linux-musl",
+    "linux-arm64",
+    "linux",
+    "unix-arm64",
+    "unix",
+    "any",
+    "base"
+  ],
   "alpine.3.11-x64": [
     "alpine.3.11-x64",
     "alpine.3.11",
@@ -107,6 +165,32 @@
     "any",
     "base"
   ],
+  "alpine.3.12-arm64": [
+    "alpine.3.12-arm64",
+    "alpine.3.12",
+    "alpine.3.11-arm64",
+    "alpine.3.11",
+    "alpine.3.10-arm64",
+    "alpine.3.10",
+    "alpine.3.9-arm64",
+    "alpine.3.9",
+    "alpine.3.8-arm64",
+    "alpine.3.8",
+    "alpine.3.7-arm64",
+    "alpine.3.7",
+    "alpine.3.6-arm64",
+    "alpine.3.6",
+    "alpine-arm64",
+    "alpine",
+    "linux-musl-arm64",
+    "linux-musl",
+    "linux-arm64",
+    "linux",
+    "unix-arm64",
+    "unix",
+    "any",
+    "base"
+  ],
   "alpine.3.12-x64": [
     "alpine.3.12-x64",
     "alpine.3.12",
@@ -142,6 +226,20 @@
     "any",
     "base"
   ],
+  "alpine.3.6-arm64": [
+    "alpine.3.6-arm64",
+    "alpine.3.6",
+    "alpine-arm64",
+    "alpine",
+    "linux-musl-arm64",
+    "linux-musl",
+    "linux-arm64",
+    "linux",
+    "unix-arm64",
+    "unix",
+    "any",
+    "base"
+  ],
   "alpine.3.6-x64": [
     "alpine.3.6-x64",
     "alpine.3.6",
@@ -166,6 +264,22 @@
     "any",
     "base"
   ],
+  "alpine.3.7-arm64": [
+    "alpine.3.7-arm64",
+    "alpine.3.7",
+    "alpine.3.6-arm64",
+    "alpine.3.6",
+    "alpine-arm64",
+    "alpine",
+    "linux-musl-arm64",
+    "linux-musl",
+    "linux-arm64",
+    "linux",
+    "unix-arm64",
+    "unix",
+    "any",
+    "base"
+  ],
   "alpine.3.7-x64": [
     "alpine.3.7-x64",
     "alpine.3.7",
@@ -193,6 +307,24 @@
     "any",
     "base"
   ],
+  "alpine.3.8-arm64": [
+    "alpine.3.8-arm64",
+    "alpine.3.8",
+    "alpine.3.7-arm64",
+    "alpine.3.7",
+    "alpine.3.6-arm64",
+    "alpine.3.6",
+    "alpine-arm64",
+    "alpine",
+    "linux-musl-arm64",
+    "linux-musl",
+    "linux-arm64",
+    "linux",
+    "unix-arm64",
+    "unix",
+    "any",
+    "base"
+  ],
   "alpine.3.8-x64": [
     "alpine.3.8-x64",
     "alpine.3.8",
@@ -223,6 +355,26 @@
     "any",
     "base"
   ],
+  "alpine.3.9-arm64": [
+    "alpine.3.9-arm64",
+    "alpine.3.9",
+    "alpine.3.8-arm64",
+    "alpine.3.8",
+    "alpine.3.7-arm64",
+    "alpine.3.7",
+    "alpine.3.6-arm64",
+    "alpine.3.6",
+    "alpine-arm64",
+    "alpine",
+    "linux-musl-arm64",
+    "linux-musl",
+    "linux-arm64",
+    "linux",
+    "unix-arm64",
+    "unix",
+    "any",
+    "base"
+  ],
   "alpine.3.9-x64": [
     "alpine.3.9-x64",
     "alpine.3.9",
diff --git a/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.json b/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.json
index 4584c45f8e267e..b0c04b16cfb0cb 100644
--- a/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.json
+++ b/src/libraries/pkg/Microsoft.NETCore.Platforms/runtime.json
@@ -5,6 +5,12 @@
         "linux-musl"
       ]
     },
+    "alpine-arm64": {
+      "#import": [
+        "alpine",
+        "linux-musl-arm64"
+      ]
+    },
     "alpine-x64": {
       "#import": [
         "alpine",
@@ -16,6 +22,12 @@
         "alpine.3.9"
       ]
     },
+    "alpine.3.10-arm64": {
+      "#import": [
+        "alpine.3.10",
+        "alpine.3.9-arm64"
+      ]
+    },
     "alpine.3.10-x64": {
       "#import": [
         "alpine.3.10",
@@ -27,6 +39,12 @@
         "alpine.3.10"
       ]
     },
+    "alpine.3.11-arm64": {
+      "#import": [
+        "alpine.3.11",
+        "alpine.3.10-arm64"
+      ]
+    },
     "alpine.3.11-x64": {
       "#import": [
         "alpine.3.11",
@@ -38,6 +56,12 @@
         "alpine.3.11"
       ]
     },
+    "alpine.3.12-arm64": {
+      "#import": [
+        "alpine.3.12",
+        "alpine.3.11-arm64"
+      ]
+    },
     "alpine.3.12-x64": {
       "#import": [
         "alpine.3.12",
@@ -49,6 +73,12 @@
         "alpine"
       ]
     },
+    "alpine.3.6-arm64": {
+      "#import": [
+        "alpine.3.6",
+        "alpine-arm64"
+      ]
+    },
     "alpine.3.6-x64": {
       "#import": [
         "alpine.3.6",
@@ -60,6 +90,12 @@
         "alpine.3.6"
       ]
     },
+    "alpine.3.7-arm64": {
+      "#import": [
+        "alpine.3.7",
+        "alpine.3.6-arm64"
+      ]
+    },
     "alpine.3.7-x64": {
       "#import": [
         "alpine.3.7",
@@ -71,6 +107,12 @@
         "alpine.3.7"
       ]
     },
+    "alpine.3.8-arm64": {
+      "#import": [
+        "alpine.3.8",
+        "alpine.3.7-arm64"
+      ]
+    },
     "alpine.3.8-x64": {
       "#import": [
         "alpine.3.8",
@@ -82,6 +124,12 @@
         "alpine.3.8"
       ]
     },
+    "alpine.3.9-arm64": {
+      "#import": [
+        "alpine.3.9",
+        "alpine.3.8-arm64"
+      ]
+    },
     "alpine.3.9-x64": {
       "#import": [
         "alpine.3.9",
diff --git a/src/libraries/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props b/src/libraries/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props
index 49876be074df16..a298540f94d8fa 100644
--- a/src/libraries/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props
+++ b/src/libraries/pkg/Microsoft.NETCore.Platforms/runtimeGroups.props
@@ -15,7 +15,7 @@
 
     <RuntimeGroup Include="alpine">
       <Parent>linux-musl</Parent>
-      <Architectures>x64</Architectures>
+      <Architectures>x64;arm64</Architectures>
       <Versions>3.6;3.7;3.8;3.9;3.10;3.11;3.12</Versions>
     </RuntimeGroup>
 
diff --git a/src/libraries/restore/runtime/runtime.depproj b/src/libraries/restore/runtime/runtime.depproj
index e9ac35fcb8d2f4..7d841e4691f9b4 100644
--- a/src/libraries/restore/runtime/runtime.depproj
+++ b/src/libraries/restore/runtime/runtime.depproj
@@ -20,13 +20,6 @@
          Exclude here so that when building with the 2.x SDK we don't place it in the test shared framework.
          This can be removed once we have a new SDK -->
     <FileToExclude Include="apphost" />
-
-    <!-- System.Data.SqlClient is not live-built anymore -->
-    <PackageReference Include="System.Data.SqlClient" Version="$(SystemDataSqlClientVersion)" />
-    <!-- Exclude live-built dependencies -->
-    <FileToExclude Include="Microsoft.Win32.Registry" />
-    <FileToExclude Include="System.Security.AccessControl" />
-    <FileToExclude Include="System.Security.Principal.Windows" />
   </ItemGroup>
 
   <ItemGroup>
@@ -36,7 +29,6 @@
   <!-- Setup the testing shared framework host -->
   <Target Name="SetupTestingHost"
           Condition="'$(BinPlaceTestSharedFramework)' == 'true'"
-          DependsOnTargets="OverrideRuntimeMono"
           AfterTargets="AfterResolveReferences">
     <PropertyGroup>
       <HostFxrFileName Condition="'$(TargetsWindows)' == 'true'">hostfxr</HostFxrFileName>
@@ -49,13 +41,7 @@
       <UseHardlink Condition="'$(_runtimeOSFamily)' == 'FreeBSD'">false</UseHardlink>
     </PropertyGroup>
 
-    <ItemGroup Condition="'$(RuntimeFlavor)' == 'Mono'">
-      <HostFxFile Include="@(StoreTestHostFiles)" Condition="'%(StoreTestHostFiles.Filename)' == '$(HostFxrFileName)'" />
-      <HostPolicyFile Include="@(StoreTestHostFiles)" Condition="'%(StoreTestHostFiles.Filename)' == '$(HostPolicyFileName)'" />
-      <DotnetExe Include="@(StoreTestHostFiles)" Condition="'%(StoreTestHostFiles.Filename)' == 'dotnet'" />
-    </ItemGroup>
-
-    <ItemGroup Condition="'$(RuntimeFlavor)' != 'Mono'">
+    <ItemGroup>
       <HostFxFile Include="@(ReferenceCopyLocalPaths)" Condition="'%(ReferenceCopyLocalPaths.Filename)' == '$(HostFxrFileName)'" />
       <DotnetExe Include="@(ReferenceCopyLocalPaths)" Condition="'%(ReferenceCopyLocalPaths.Filename)' == 'dotnet'" />
     </ItemGroup>
@@ -70,12 +56,6 @@
           SkipUnchangedFiles="true"
           UseHardlinksIfPossible="$(UseHardlink)" />
 
-    <Copy Condition="'$(RuntimeFlavor)' == 'Mono'"
-          SourceFiles="@(HostPolicyFile)"
-          DestinationFolder="$(TestHostRootPath)shared\Microsoft.NETCore.App\$(ProductVersion)"
-          SkipUnchangedFiles="true"
-          UseHardlinksIfPossible="$(UseHardlink)" />
-
     <Exec Command="chmod +x $(TestHostRootPath)%(DotnetExe.Filename)%(DotnetExe.Extension)" Condition="'$(TargetOS)' != 'Windows_NT' and '$(OS)' != 'Windows_NT'"/>
   </Target>
 
@@ -111,12 +91,7 @@
   <Target Name="OverrideRuntimeMono"
           DependsOnTargets="ResolveRuntimeFilesFromLocalBuild"
           AfterTargets="AfterResolveReferences;FilterNugetPackages"
-          Condition="'$(RuntimeFlavor)' == 'Mono'">
-    <ItemGroup>
-      <StoreTestHostFiles Include="@(ReferenceCopyLocalPaths)" />
-      <ReferenceCopyLocalPaths Remove="@(ReferenceCopyLocalPaths)" />
-    </ItemGroup>
-  </Target>
+          Condition="'$(RuntimeFlavor)' == 'Mono'" />
 
   <Target Name="GetCoreCLRILFiles" DependsOnTargets="ResolveRuntimeFilesFromLocalBuild">
     <ItemGroup>