diff --git a/samples/MonoSanityClient/MonoSanityClient.csproj b/samples/MonoSanityClient/MonoSanityClient.csproj
index d42d71999d..760b322366 100644
--- a/samples/MonoSanityClient/MonoSanityClient.csproj
+++ b/samples/MonoSanityClient/MonoSanityClient.csproj
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
+    <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <!-- Local alternative to <PackageReference Include="Microsoft.AspNetCore.Blazor.Build" /> -->
diff --git a/src/Microsoft.AspNetCore.Blazor.BuildTools/Microsoft.AspNetCore.Blazor.BuildTools.csproj b/src/Microsoft.AspNetCore.Blazor.BuildTools/Microsoft.AspNetCore.Blazor.BuildTools.csproj
index 31a949002a..6930e4f727 100644
--- a/src/Microsoft.AspNetCore.Blazor.BuildTools/Microsoft.AspNetCore.Blazor.BuildTools.csproj
+++ b/src/Microsoft.AspNetCore.Blazor.BuildTools/Microsoft.AspNetCore.Blazor.BuildTools.csproj
@@ -4,6 +4,7 @@
     <TargetFramework>netcoreapp2.0</TargetFramework>
     <OutputType>Exe</OutputType>
     <OutDir>tools</OutDir>
+    <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/anglesharp/AngleSharpBuilder/AngleSharpBuilder.csproj b/src/anglesharp/AngleSharpBuilder/AngleSharpBuilder.csproj
index dca49b3219..fd4c96052a 100644
--- a/src/anglesharp/AngleSharpBuilder/AngleSharpBuilder.csproj
+++ b/src/anglesharp/AngleSharpBuilder/AngleSharpBuilder.csproj
@@ -3,6 +3,7 @@
   <PropertyGroup>
     <TargetFramework>netcoreapp2.0</TargetFramework>
     <OutputType>Exe</OutputType>
+    <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <ItemGroup>