aspnetcore/breaking-changes/5/extensions-package-reference-changes.md
With the migration of some Microsoft.Extensions.* NuGet packages from the dotnet/extensions repository to dotnet/runtime, as described in aspnet/Announcements#411, packaging changes are being applied to some of the migrated packages. For discussion on this issue, see dotnet/aspnetcore#21033.
5.0 Preview 4
Some Microsoft.Extensions.* packages included package references for APIs on which your app relied.
Your app may have to add Microsoft.Extensions.* package dependencies.
Packaging policies were updated to better align with the dotnet/runtime repository. Under the new policy, unused package references are removed from .nupkg files during packaging.
Consumers of the affected packages should add a direct dependency on the removed package dependency in their project if APIs from removed package dependency are used. The following table lists the affected packages and the corresponding changes.
| Package name | Change description |
|---|---|
| Microsoft.Extensions.Configuration.Binder | Removed reference to Microsoft.Extensions.Configuration |
| Microsoft.Extensions.Configuration.Json | Removed reference to System.Threading.Tasks.Extensions |
| Microsoft.Extensions.Hosting.Abstractions | Removed reference to Microsoft.Extensions.Logging.Abstractions |
| Microsoft.Extensions.Logging | Removed reference to Microsoft.Extensions.Configuration.Binder |
| Microsoft.Extensions.Logging.Console | Removed reference to Microsoft.Extensions.Configuration.Abstractions |
| Microsoft.Extensions.Logging.EventLog | Removed reference to System.Diagnostics.EventLog for the .NET Framework 4.6.1 target framework moniker |
| Microsoft.Extensions.Logging.EventSource | Removed reference to System.Threading.Tasks.Extensions |
| Microsoft.Extensions.Options | Removed reference to System.ComponentModel.Annotations |
For example, the package reference to Microsoft.Extensions.Configuration was removed from Microsoft.Extensions.Configuration.Binder. No API from the dependency was used in the package. Users of Microsoft.Extensions.Configuration.Binder who depend on APIs from Microsoft.Extensions.Configuration should add a direct reference to it in their project.
None
<!-- ### Category ASP.NET Core ### Affected APIs Not detectable via API analysis -->