Worked on the JuliaLang/Pkg.jl repository to enhance documentation around standard library versioning in the Julia environment. Focused on updating the managing-packages documentation, the work clarified how built-in libraries such as Dates, Mmap, and Printf are versioned starting from Julia 1.11, and provided updated examples reflecting behavior in Julia v1.13. Used Markdown to ensure clear, accessible documentation and emphasized traceability by linking the changes to a specific commit. This effort improved developer understanding of environment management and reduced ambiguity regarding standard library versions, demonstrating attention to detail and a methodical approach to technical communication and documentation practices.