During May 2025, Bengt Brodersen developed dynamic CPU-based concurrency control for the runner in the nektos/act repository. He introduced a command-line interface option that allows users to configure the maximum number of concurrent jobs, with the default value now automatically determined based on available CPUs, ensuring a minimum of one. This approach enables more effective performance tuning and scalability for larger workflows. Bengt’s work focused on CLI development, concurrency management, and system configuration, utilizing Go to implement the feature. The depth of the solution addressed both flexibility and resource optimization, though no major bug fixes were completed during this period.