diff --git a/src/PdfHandler.Infrastructure/PdfHandler.Infrastructure.csproj b/src/PdfHandler.Infrastructure/PdfHandler.Infrastructure.csproj
index 40a90aa..3f2d086 100644
--- a/src/PdfHandler.Infrastructure/PdfHandler.Infrastructure.csproj
+++ b/src/PdfHandler.Infrastructure/PdfHandler.Infrastructure.csproj
@@ -23,6 +23,7 @@
     <!-- <PackageReference Include="itext7" Version="7.2.5" /> -->
     
     <!-- ✅ PdfSharp 6.x に更新（MIT License - 完全無償・商用利用可能） -->
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.1" />
     <PackageReference Include="PdfSharp" Version="6.1.1" />
     
     <!-- 既存のパッケージ（保持） -->
diff --git a/src/PdfHandler.UI/PdfHandler.UI.csproj b/src/PdfHandler.UI/PdfHandler.UI.csproj
index e72db1d..53aa3a8 100644
--- a/src/PdfHandler.UI/PdfHandler.UI.csproj
+++ b/src/PdfHandler.UI/PdfHandler.UI.csproj
@@ -23,7 +23,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.1" />
     <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.2" />
   </ItemGroup>