# IdentityModel.AspNetCore.OAuth2Introspection > [!IMPORTANT] > `IdentityModel.AspNetCore.OAuth2Introspection` has been rebranded to `Duende.AspNetCore.Authentication.OAuth2Introspection` and henceforth will be managed > in our [FOSS repository](https://github.com/DuendeSoftware/foss) under the same Apache2 licence. > - Please update your nuget package references to the [new package](https://www.nuget.org/packages/Duende.AspNetCore.Authentication.OAuth2Introspection).