diff --git a/samples/HttpOverridesSample/HttpOverridesSample.csproj b/samples/HttpOverridesSample/HttpOverridesSample.csproj
index bfa8adbf5e..45d5c65fed 100644
--- a/samples/HttpOverridesSample/HttpOverridesSample.csproj
+++ b/samples/HttpOverridesSample/HttpOverridesSample.csproj
@@ -16,7 +16,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)'=='net461'">
-    <PackageReference Include="NETStandard.Library.NETFramework" Version="$(NETStandardLibraryNETFrameworkVersion)" />
+    <PackageReference Include="NETStandard.Library.NETFramework" Version="$(NETStandardLibraryNETFrameworkVersion)" PrivateAssets="All" />
   </ItemGroup>
 
 </Project>
diff --git a/samples/ResponseBufferingSample/ResponseBufferingSample.csproj b/samples/ResponseBufferingSample/ResponseBufferingSample.csproj
index 013a6ab3bc..c26d9d3ce7 100644
--- a/samples/ResponseBufferingSample/ResponseBufferingSample.csproj
+++ b/samples/ResponseBufferingSample/ResponseBufferingSample.csproj
@@ -16,7 +16,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)'=='net461'">
-    <PackageReference Include="NETStandard.Library.NETFramework" Version="$(NETStandardLibraryNETFrameworkVersion)" />
+    <PackageReference Include="NETStandard.Library.NETFramework" Version="$(NETStandardLibraryNETFrameworkVersion)" PrivateAssets="All"  />
   </ItemGroup>
 
 </Project>
diff --git a/samples/ResponseCompressionSample/ResponseCompressionSample.csproj b/samples/ResponseCompressionSample/ResponseCompressionSample.csproj
index 570dc81ca6..7ce9c8b8d1 100644
--- a/samples/ResponseCompressionSample/ResponseCompressionSample.csproj
+++ b/samples/ResponseCompressionSample/ResponseCompressionSample.csproj
@@ -21,7 +21,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)'=='net461'">
-    <PackageReference Include="NETStandard.Library.NETFramework" Version="$(NETStandardLibraryNETFrameworkVersion)" />
+    <PackageReference Include="NETStandard.Library.NETFramework" Version="$(NETStandardLibraryNETFrameworkVersion)" PrivateAssets="All"  />
   </ItemGroup>
 
 </Project>
diff --git a/samples/RewriteSample/RewriteSample.csproj b/samples/RewriteSample/RewriteSample.csproj
index 416d269729..f621a9b1dd 100644
--- a/samples/RewriteSample/RewriteSample.csproj
+++ b/samples/RewriteSample/RewriteSample.csproj
@@ -16,8 +16,8 @@
     <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel.Https" Version="$(AspNetCoreVersion)" />
   </ItemGroup>
 
-  <ItemGroup>
-    <PackageReference Include="NETStandard.Library.NETFramework" Version="$(NETStandardLibraryNETFrameworkVersion)" />
+  <ItemGroup Condition="'$(TargetFramework)'=='net461'">
+    <PackageReference Include="NETStandard.Library.NETFramework" Version="$(NETStandardLibraryNETFrameworkVersion)" PrivateAssets="All" />
   </ItemGroup>
 
 </Project>