diff --git a/.nuget/NuGet.Config b/.nuget/NuGet.Config
index e99c073..3ae32a6 100644
--- a/.nuget/NuGet.Config
+++ b/.nuget/NuGet.Config
@@ -4,6 +4,6 @@
     <add key="disableSourceControlIntegration" value="true" />
   </solution>
   <packageSources>
-    <add key="nuget.org" value="https://www.nuget.org/api/v2/" />
+    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
   </packageSources>
 </configuration>
\ No newline at end of file
diff --git a/.nuget/NuGet.exe b/.nuget/NuGet.exe
index be85ec2..4cbab24 100644
Binary files a/.nuget/NuGet.exe and b/.nuget/NuGet.exe differ
diff --git a/MicrosoftConfigurationBuilders.msbuild b/MicrosoftConfigurationBuilders.msbuild
index 2341c5a..7dfdf93 100644
--- a/MicrosoftConfigurationBuilders.msbuild
+++ b/MicrosoftConfigurationBuilders.msbuild
@@ -2,11 +2,12 @@
 
   <ItemGroup>
     <AssemblyProject Include="src\Base\Base.csproj" />
-    <AssemblyProject Include="src\Environment\Environment.csproj" />
-    <AssemblyProject Include="src\UserSecrets\UserSecrets.csproj" />
-    <AssemblyProject Include="src\Azure\Azure.csproj" />
-    <AssemblyProject Include="src\Json\Json.csproj" />
-    <AssemblyProject Include="src\AzureAppConfig\AzureAppConfig.csproj" />
+    <AssemblyProject Include="src\Environment\Environment.csproj" Condition="'$(SkipEnvironmentProj)' != 'true'" />
+    <AssemblyProject Include="src\UserSecrets\UserSecrets.csproj" Condition="'$(SkipUserSecretsProj)' != 'true'" />
+    <AssemblyProject Include="src\KeyPerFile\KeyPerFile.csproj" Condition="'$(SkipKeyPerFileProj)' != 'true'" />
+    <AssemblyProject Include="src\Azure\Azure.csproj" Condition="'$(SkipAzureProj)' != 'true'" />
+    <AssemblyProject Include="src\Json\Json.csproj" Condition="'$(SkipJsonProj)' != 'true'" />
+    <AssemblyProject Include="src\AzureAppConfig\AzureAppConfig.csproj" Condition="'$(SkipAzureAppConfigProj)' != 'true'" />
   </ItemGroup>
 
   <ItemGroup>
@@ -62,7 +63,7 @@
 
   <Target Name="RebuildPackages" DependsOnTargets="CleanPackages;BuildPackages" />
 
-  <Target Name="RestorePackages">
+  <Target Name="RestorePackages" Condition="'$(SkipPackageRestore)' != 'true'">
     <Exec Command=".nuget\NuGet.exe restore" />
   </Target>
 
diff --git a/src/packages/packages.csproj b/src/packages/packages.csproj
index 26efef3..39aa595 100644
--- a/src/packages/packages.csproj
+++ b/src/packages/packages.csproj
@@ -24,12 +24,12 @@
   </PropertyGroup>
   <ItemGroup Label="Nuget Project Build Order">
     <NuGetProject Include="ConfigurationBuilders.Base.nupkg\Microsoft.Configuration.ConfigurationBuilders.Base.nuproj" />
-    <NuGetProject Include="ConfigurationBuilders.Environment.nupkg\Microsoft.Configuration.ConfigurationBuilders.Environment.nuproj" />
-    <NuGetProject Include="ConfigurationBuilders.UserSecrets.nupkg\Microsoft.Configuration.ConfigurationBuilders.UserSecrets.nuproj" />
-    <NuGetProject Include="ConfigurationBuilders.KeyPerFile.nupkg\Microsoft.Configuration.ConfigurationBuilders.KeyPerFile.nuproj" />
-    <NuGetProject Include="ConfigurationBuilders.Azure.nupkg\Microsoft.Configuration.ConfigurationBuilders.Azure.nuproj" />
-    <NuGetProject Include="ConfigurationBuilders.Json.nupkg\Microsoft.Configuration.ConfigurationBuilders.Json.nuproj" />
-    <NuGetProject Include="ConfigurationBuilders.AzureAppConfiguration.nupkg\Microsoft.Configuration.ConfigurationBuilders.AzureAppConfiguration.nuproj" />
+    <NuGetProject Include="ConfigurationBuilders.Environment.nupkg\Microsoft.Configuration.ConfigurationBuilders.Environment.nuproj" Condition="'$(SkipEnvironmentProj)' != 'true'" />
+    <NuGetProject Include="ConfigurationBuilders.UserSecrets.nupkg\Microsoft.Configuration.ConfigurationBuilders.UserSecrets.nuproj" Condition="'$(SkipUserSecretsProj)' != 'true'" />
+    <NuGetProject Include="ConfigurationBuilders.KeyPerFile.nupkg\Microsoft.Configuration.ConfigurationBuilders.KeyPerFile.nuproj" Condition="'$(SkipKeyPerFileProj)' != 'true'" />
+    <NuGetProject Include="ConfigurationBuilders.Azure.nupkg\Microsoft.Configuration.ConfigurationBuilders.Azure.nuproj" Condition="'$(SkipAzureProj)' != 'true'" />
+    <NuGetProject Include="ConfigurationBuilders.Json.nupkg\Microsoft.Configuration.ConfigurationBuilders.Json.nuproj" Condition="'$(SkipJsonProj)' != 'true'" />
+    <NuGetProject Include="ConfigurationBuilders.AzureAppConfiguration.nupkg\Microsoft.Configuration.ConfigurationBuilders.AzureAppConfiguration.nuproj" Condition="'$(SkipAzureAppConfigProj)' != 'true'" />
   </ItemGroup>
   <ItemGroup Label="Base">
     <None Include="ConfigurationBuilders.Base.nupkg\Microsoft.Configuration.ConfigurationBuilders.Base.nuspec" />
diff --git a/test/Microsoft.Configuration.ConfigurationBuilders.Test/Test.csproj b/test/Microsoft.Configuration.ConfigurationBuilders.Test/Test.csproj
index daf4fcd..8ce51c5 100644
--- a/test/Microsoft.Configuration.ConfigurationBuilders.Test/Test.csproj
+++ b/test/Microsoft.Configuration.ConfigurationBuilders.Test/Test.csproj
@@ -45,12 +45,12 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="CommonBuilderTests.cs" />
-    <Compile Include="UserSecretsTests.cs" />
-    <Compile Include="KeyPerFileTests.cs" />
-    <Compile Include="SimpleJsonTests.cs" />
+    <Compile Include="UserSecretsTests.cs" Condition="'$(SkipUserSecretsProj)' != 'true'" />
+    <Compile Include="KeyPerFileTests.cs" Condition="'$(SkipKeyPerFileProj)' != 'true'" />
+    <Compile Include="SimpleJsonTests.cs" Condition="'$(SkipJsonProj)' != 'true'" />
     <Compile Include="UtilsTests.cs" />
     <Compile Include="BaseTests.cs" />
-    <Compile Include="EnvironmentTests.cs" />
+    <Compile Include="EnvironmentTests.cs" Condition="'$(SkipEnvironmentProj)' != 'true'" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
@@ -58,19 +58,19 @@
       <Project>{f382fbf8-146d-4968-a199-90d37f9ef9a7}</Project>
       <Name>Base</Name>
     </ProjectReference>
-    <ProjectReference Include="..\..\src\Environment\Environment.csproj">
+    <ProjectReference Include="..\..\src\Environment\Environment.csproj"  Condition="'$(SkipEnvironmentProj)' != 'true'">
       <Project>{c6530e81-d8d8-47a8-912e-d2939f801835}</Project>
       <Name>Environment</Name>
     </ProjectReference>
-    <ProjectReference Include="..\..\src\Json\Json.csproj">
+    <ProjectReference Include="..\..\src\Json\Json.csproj" Condition="'$(SkipJsonProj)' != 'true'">
       <Project>{84e0ce5d-4af2-414f-a940-22b3f93fc727}</Project>
       <Name>Json</Name>
     </ProjectReference>
-    <ProjectReference Include="..\..\src\UserSecrets\UserSecrets.csproj">
+    <ProjectReference Include="..\..\src\UserSecrets\UserSecrets.csproj" Condition="'$(SkipUserSecretsProj)' != 'true'">
       <Project>{c60d6cbb-d513-4692-81a6-0be5d45e4702}</Project>
       <Name>UserSecrets</Name>
     </ProjectReference>
-    <ProjectReference Include="..\..\src\KeyPerFile\KeyPerFile.csproj">
+    <ProjectReference Include="..\..\src\KeyPerFile\KeyPerFile.csproj" Condition="'$(SkipKeyPerFileProj)' != 'true'">
       <Project>{60c31149-44ed-4789-b5c3-aaa5d3b2fcf1}</Project>
       <Name>KeyPerFile</Name>
     </ProjectReference>