Changes Announced on June 16, 2026

Dropping C# NuGet package author signing

We will be dropping C# author signing for our NuGet packages (Google.Protobuf and Google.Protobuf.Tools) in future releases.

Previously, we used a Google-owned certificate to author-sign NuGet packages. NuGet packages will no longer contain a Google author signature. They will continue to be repository-signed by nuget.org upon upload.

Note that individual DLLs inside the package will remain signed. This change only affects the signature of the NuGet package container itself.

This change aligns with similar signing changes being made to the gRPC NuGet packages.