diff --git a/samples/Directory.Build.props b/samples/Directory.Build.props
index 31b1eb03e..cb2ca12de 100644
--- a/samples/Directory.Build.props
+++ b/samples/Directory.Build.props
@@ -14,7 +14,7 @@
   <Import Project="Sdk.props" Sdk="Microsoft.DotNet.Arcade.Sdk" />
 
   <ItemGroup>
-    <PackageReference Include="System.Net.Http" Version="$(SystemNetHttpVersion)" PrivateAssets="all" />
+    <PackageReference Include="System.Net.Http" Version="$(SystemNetHttpVersion)" PrivateAssets="all" ExcludeAssets="all" />
   </ItemGroup>
 
 </Project>
\ No newline at end of file
diff --git a/src/Microsoft.CodeAnalysis.Testing/Directory.Build.props b/src/Microsoft.CodeAnalysis.Testing/Directory.Build.props
index b46363b69..8e9aeed8b 100644
--- a/src/Microsoft.CodeAnalysis.Testing/Directory.Build.props
+++ b/src/Microsoft.CodeAnalysis.Testing/Directory.Build.props
@@ -88,7 +88,7 @@
   <!-- Public API Analyzer configuration -->
   <ItemGroup>
     <PackageReference Include="Roslyn.Diagnostics.Analyzers" Version="$(RoslynDiagnosticsAnalyzersVersion)" PrivateAssets="all" />
-    <PackageReference Include="System.Net.Http" Version="$(SystemNetHttpVersion)" PrivateAssets="all" />
+    <PackageReference Include="System.Net.Http" Version="$(SystemNetHttpVersion)" PrivateAssets="all" ExcludeAssets="all" />
     <AdditionalFiles Include="PublicAPI.Shipped.txt" />
     <AdditionalFiles Include="PublicAPI.Unshipped.txt" />
   </ItemGroup>
diff --git a/tests/Microsoft.CodeAnalysis.Testing/Directory.Build.props b/tests/Microsoft.CodeAnalysis.Testing/Directory.Build.props
index ffbb08f77..2b6e24ad9 100644
--- a/tests/Microsoft.CodeAnalysis.Testing/Directory.Build.props
+++ b/tests/Microsoft.CodeAnalysis.Testing/Directory.Build.props
@@ -60,7 +60,7 @@
     <PackageReference Include="StyleCop.Analyzers" Version="$(StyleCopAnalyzersVersion)" PrivateAssets="all" />
     <AdditionalFiles Include="$(MSBuildThisFileDirectory)..\..\stylecop.json" Link="stylecop.json" />
     <None Include="$(CodeAnalysisRuleSet)" Condition="'$(CodeAnalysisRuleSet)' != ''" Link="%(Filename)%(Extension)" />
-    <PackageReference Include="System.Net.Http" Version="$(SystemNetHttpVersion)" PrivateAssets="all" />
+    <PackageReference Include="System.Net.Http" Version="$(SystemNetHttpVersion)" PrivateAssets="all" ExcludeAssets="all" />
   </ItemGroup>
 
 </Project>