go-elasticsearch v9.4.2 was published on June 22, 2026, as a regular release of the official Go client for Elasticsearch. The useful change for ingestion code is narrow but practical: esutil.BulkIndexer now omits an empty routing query parameter instead of sending it on bulk requests.

elastic/go-elasticsearch v9.3.5 was published on June 22, 2026 with one practical fix for esutil.BulkIndexer: empty routing values are no longer sent as a routing query parameter. For data teams that use the Go client to load events, documents, or derived records into Elasticsearch, this is a small release about cleaner bulk indexing requests and less surprising routing behavior.