diff --git a/Samples/auth/Outlook-Add-in-SSO/AttachmentDemo-ASPNETCore/AttachmentDemo-ASPNETCore.csproj b/Samples/auth/Outlook-Add-in-SSO/AttachmentDemo-ASPNETCore/AttachmentDemo-ASPNETCore.csproj
index 5da957934..84e0bb315 100644
--- a/Samples/auth/Outlook-Add-in-SSO/AttachmentDemo-ASPNETCore/AttachmentDemo-ASPNETCore.csproj
+++ b/Samples/auth/Outlook-Add-in-SSO/AttachmentDemo-ASPNETCore/AttachmentDemo-ASPNETCore.csproj
@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Identity.Client" Version="4.48.1" />
+    <PackageReference Include="Microsoft.Identity.Client" Version="4.59.1" />
     <PackageReference Include="Microsoft.Identity.Web" Version="1.25.6" />
     <PackageReference Include="Microsoft.Identity.Web.MicrosoftGraph" Version="1.25.6" />
     <PackageReference Include="Microsoft.IdentityModel.Abstractions" Version="6.25.0" />