Viktor Kolomeyko focused on enhancing the security and stability of the ktorio/ktor repository by addressing a critical vulnerability in the networking stack. He implemented a targeted upgrade of the Netty dependency to version 4.2.4.Final using Gradle, mitigating the CVE-2025-55163 risk. His approach leveraged dependency management best practices, integrating the update through the Gradle version catalog to ensure traceability and auditability. Viktor verified build stability and maintained a clear change history, preparing the project for a secure release. His work demonstrated depth in dependency management and build tooling, with a focus on risk reduction and compliance in Kotlin-based systems.