During June 2025, Hydrofin focused on improving dependency hygiene and build stability in the mongodb/mongo-rust-driver repository. They migrated the project’s SHA-1 hashing implementation from the deprecated sha-1 crate to the actively maintained sha1 crate, updating both Cargo.toml and Cargo.lock files. This transition aligned the codebase with current Rust ecosystem standards, reducing future security and compatibility risks. Hydrofin ensured that the migration preserved build integrity by verifying successful compilation and passing tests. Their work demonstrated proficiency in Rust and dependency management, contributing to the long-term maintainability of the project through careful crate migration and repository hygiene practices.