Nic Pawelczyk enhanced type safety for the ProntoSFTP module within the facebook/pyre-check repository by updating the Paramiko typeshed to its latest version and introducing missing exception types, such as IncompatiblePeer. Focusing on Python development and static typing, Nic aligned the module with current typeshed standards to reduce runtime type errors and improve long-term maintainability. The work included removing obsolete pyre-ignores and preparing ProntoSFTP for stricter type checking under pyre-strict. All changes were reviewed and integrated through the standard code review process, reflecting a focused and methodical approach to improving type safety and code quality in the project.