diff --git a/src/Plotree/Package.appxmanifest b/src/Plotree/Package.appxmanifest
index a53e72f..867a630 100644
--- a/src/Plotree/Package.appxmanifest
+++ b/src/Plotree/Package.appxmanifest
@@ -26,7 +26,8 @@
   </Dependencies>
 
   <Resources>
-    <Resource Language="x-generate"/>
+    <Resource Language="en-US"/>
+    <Resource Language="ja-JP"/>
   </Resources>
 
   <Applications>
diff --git a/src/Plotree/Plotree.csproj b/src/Plotree/Plotree.csproj
index b13471d..f581fda 100644
--- a/src/Plotree/Plotree.csproj
+++ b/src/Plotree/Plotree.csproj
@@ -25,6 +25,9 @@
     <!-- MSIX バンドル設定 -->
     <AppxBundle Condition="'$(Configuration)' != 'Debug'">Always</AppxBundle>
     <AppxBundlePlatforms>x64|ARM64</AppxBundlePlatforms>
+    <!-- Keep localized PRI resources in each architecture package so its
+         manifest advertises every supported language to Partner Center. -->
+    <AppxBundleAutoResourcePackageQualifiers>Scale|DXFeatureLevel</AppxBundleAutoResourcePackageQualifiers>
     <GenerateAppInstallerFile>false</GenerateAppInstallerFile>
     <!-- MSIX 署名証明書 -->
     <PackageCertificateKeyFile Condition="'$(Configuration)' != 'Debug' and '$(PackageCertificateThumbprint)' == ''">$(MSBuildProjectDirectory)\plotree_sign.pfx</PackageCertificateKeyFile>