Worked on modernizing the DNS resolution stack in the denoland/deno repository by replacing the unmaintained trust-dns library with HickoryDNS within the deno_net extension. This transition involved updating dependencies and refactoring imports to ensure compatibility with the new DNS library, thereby reducing long-term maintenance risks and improving reliability. The work focused on DNS resolution, dependency management, and networking, all implemented in Rust. By addressing the dependency risk and enabling future support, the changes contributed to a more robust DNS infrastructure. No bugs were fixed during this period, with efforts concentrated on delivering this targeted feature enhancement for the project.