Sorin Petreasca worked on stabilizing the continuous integration workflow for the multiversx/mx-contracts-rs repository, focusing on improving build determinism and release reliability. He addressed CI flakiness by pinning the Rust toolchain to version 1.86 within GitHub Actions, ensuring that builds remained consistent across environments. Sorin also updated the release artifact image tag from v9.0.0 to v10.0.0, which enabled reproducible releases and simplified contributor onboarding. His work primarily involved CI/CD automation and YAML configuration, demonstrating a methodical approach to release engineering. Over the month, he delivered one feature, emphasizing depth in workflow stability rather than breadth.