OpenLineage monthly summary for 2026-01: Implemented HTTP Content-Encoding header support to indicate gzip compression on outgoing requests in the Java client, improving data transfer efficiency for lineage data. Delivered via commit 2322f3719ec99be8b621d1eae18b60d0614a37ce (Signed-off-by: Lukáš Riedel). No major bugs reported this month; changes progressed through standard review and signing processes. Business value: reduced payload sizes, lower bandwidth costs, and faster ingestion paths for downstream consumers. Technologies/skills demonstrated: Java, HTTP headers, REST interactions, Git version control, code signing, and code reviews.