diff --git a/FolderDiffIL4DotNet.Core/FolderDiffIL4DotNet.Core.csproj b/FolderDiffIL4DotNet.Core/FolderDiffIL4DotNet.Core.csproj
index 09c35196..05509f72 100644
--- a/FolderDiffIL4DotNet.Core/FolderDiffIL4DotNet.Core.csproj
+++ b/FolderDiffIL4DotNet.Core/FolderDiffIL4DotNet.Core.csproj
@@ -32,7 +32,7 @@
   <ItemGroup>
     <!-- Nerdbank.GitVersioning: version derived from version.json / version.json からバージョンを自動算出 -->
     <PackageReference Include="Nerdbank.GitVersioning" Version="3.10.91" PrivateAssets="All" />
-    <PackageReference Include="System.Text.Encoding.CodePages" Version="10.0.10" />
+    <PackageReference Include="System.Text.Encoding.CodePages" Version="10.0.11" />
   </ItemGroup>
 
 </Project>