Worked on the debezium/debezium repository to upgrade the Cassandra 4 connector from version 4.0.2 to 4.1.8, aligning with evolving dependency requirements. Using Java and Maven, the approach emphasized careful release engineering and dependency management, ensuring no functional changes were introduced during the upgrade. After identifying issues linked to Cassandra 4.1.8, a controlled rollback to 4.1.7 was executed, guided by upstream issue tracking and thorough validation. The process preserved data integrity and minimized production risk, with detailed documentation supporting future upgrade cycles. This work stabilized the Cassandra 4.x integration and established a reliable rollback path for ongoing maintenance.