diff --git a/Sandwych.QuickGraph.snk b/Sandwych.QuickGraph.snk
new file mode 100644
index 0000000..9abaaa4
Binary files /dev/null and b/Sandwych.QuickGraph.snk differ
diff --git a/Shared.props b/Shared.props
index 84a007e..3ea7673 100644
--- a/Shared.props
+++ b/Shared.props
@@ -4,7 +4,7 @@
     <Copyright>Copyright (C) Jonathan "Peli" de Halleux</Copyright>
     <Authors>Peli de Halleux, Wei Li</Authors>
     <PackageProjectUrl>https://github.com/oldrev/Sandwych.QuickGraph</PackageProjectUrl>
-    <PackageLicenseUrl>https://github.com/oldrev/Sandwych.QuickGraph/blob/master/LICENSE.md</PackageLicenseUrl>
+    <PackageLicenseExpression>MS-PL</PackageLicenseExpression>
     <TargetFrameworks>netstandard2.0</TargetFrameworks>
     <VersionSuffix Condition="'$(VersionSuffix)'!='' AND '$(BuildNumber)' != ''">$(VersionSuffix)-$(BuildNumber)</VersionSuffix>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
@@ -15,8 +15,8 @@
     <GenerateAssemblyCompanyAttribute>false</GenerateAssemblyCompanyAttribute>
     <GenerateAssemblyProductAttribute>false</GenerateAssemblyProductAttribute>
     <GenerateAssemblyCopyrightAttribute>false</GenerateAssemblyCopyrightAttribute>
-    <GenerateAssemblyVersionAttribute>false</GenerateAssemblyVersionAttribute>
-    <GenerateAssemblyFileVersionAttribute>false</GenerateAssemblyFileVersionAttribute>
+    <SignAssembly>true</SignAssembly>
+    <AssemblyOriginatorKeyFile>$(MSBuildThisFileDirectory)/Sandwych.QuickGraph.snk</AssemblyOriginatorKeyFile>
   </PropertyGroup>
 
 </Project>
diff --git a/src/Sandwych.QuickGraph.Core/Directory.Build.props b/src/Sandwych.QuickGraph.Core/Directory.Build.props
deleted file mode 100644
index 9d4e6f1..0000000
--- a/src/Sandwych.QuickGraph.Core/Directory.Build.props
+++ /dev/null
@@ -1,13 +0,0 @@
-<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-
-  <PropertyGroup>
-    <PackageId>Sandwych.QuickGraph.Core</PackageId>
-    <Title>Generic Graph Data Structures and Algorithms for .NET(.NET Standard and .NET Framework)</Title>
-    <Summary></Summary>
-    <Description>Sandwych.QuickGraph is a port of the awesome QuickGraph to .NET Standard, it provides generic directed/undirected graph datastructures and algorithms for .NET. </Description>
-    <PackageTags>graph;topologic;quickgraph</PackageTags>
-  </PropertyGroup>
-
-  <Import Project="../../Shared.props" />
-
-</Project>
diff --git a/src/Sandwych.QuickGraph.Core/Sandwych.QuickGraph.Core.csproj b/src/Sandwych.QuickGraph.Core/Sandwych.QuickGraph.Core.csproj
index 82b82c4..eba5609 100644
--- a/src/Sandwych.QuickGraph.Core/Sandwych.QuickGraph.Core.csproj
+++ b/src/Sandwych.QuickGraph.Core/Sandwych.QuickGraph.Core.csproj
@@ -4,6 +4,11 @@
     <TargetFrameworks>netstandard1.6;netstandard2.0;netstandard2.1;net45</TargetFrameworks>
     <RootNamespace>QuickGraph</RootNamespace>
     <LangVersion>latest</LangVersion>
+    <PackageId>Sandwych.QuickGraph.Core</PackageId>
+    <Title>Generic Graph Data Structures and Algorithms for .NET(.NET Standard and .NET Framework)</Title>
+    <Summary></Summary>
+    <Description>Sandwych.QuickGraph is a port of the awesome QuickGraph to .NET Standard, it provides generic directed/undirected graph datastructures and algorithms for .NET. </Description>
+    <PackageTags>graph;topologic;quickgraph</PackageTags>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">