diff --git a/MineSweeper.csproj b/MineSweeper.csproj
index 74abf5c..fd4db81 100644
--- a/MineSweeper.csproj
+++ b/MineSweeper.csproj
@@ -1,10 +1,15 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>net6.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
+    <RepositoryUrl>https://github.com/H1K0/MineSweeper.git</RepositoryUrl>
+    <Copyright>Masahiko AMANO a.k.a. H1K0</Copyright>
+    <Authors>H1K0</Authors>
+    <StartupObject>MineSweeper.Program</StartupObject>
+    <PackageProjectUrl>https://github.com/H1K0/MineSweeper</PackageProjectUrl>
   </PropertyGroup>
 
 </Project>