diff --git a/src/NETCore.MailKit/NETCore.MailKit.csproj b/src/NETCore.MailKit/NETCore.MailKit.csproj
index 9ead217..d70da9a 100644
--- a/src/NETCore.MailKit/NETCore.MailKit.csproj
+++ b/src/NETCore.MailKit/NETCore.MailKit.csproj
@@ -5,8 +5,16 @@
     <SccProvider>SAK</SccProvider>
     <SccAuxPath>SAK</SccAuxPath>
     <SccLocalPath>SAK</SccLocalPath>
+    <PublishRepositoryUrl>true</PublishRepositoryUrl>
+    <IncludeSymbols>true</IncludeSymbols>
+    <SymbolPackageFormat>snupkg</SymbolPackageFormat>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
+  </ItemGroup>
+
+
   <PropertyGroup>
     <TargetFramework>netstandard2.1</TargetFramework>
     <GeneratePackageOnBuild>True</GeneratePackageOnBuild>