diff --git a/delta/plugins/storage/src/main/scala/ch/epfl/bluebrain/nexus/delta/plugins/storage/storages/operations/s3/S3FileOperations.scala b/delta/plugins/storage/src/main/scala/ch/epfl/bluebrain/nexus/delta/plugins/storage/storages/operations/s3/S3FileOperations.scala
index 35dd4f5509..0cb1569a7c 100644
--- a/delta/plugins/storage/src/main/scala/ch/epfl/bluebrain/nexus/delta/plugins/storage/storages/operations/s3/S3FileOperations.scala
+++ b/delta/plugins/storage/src/main/scala/ch/epfl/bluebrain/nexus/delta/plugins/storage/storages/operations/s3/S3FileOperations.scala
@@ -45,7 +45,7 @@ object S3FileOperations {
   final case class S3FileMetadata(contentType: Option[ContentType], metadata: FileStorageMetadata)
 
   private val log       = Logger[S3FileOperations]
-  private val ChunkSize = 1024
+  private val ChunkSize = 8 * 1024
 
   def mk(client: S3StorageClient)(implicit as: ActorSystem, uuidf: UUIDF): S3FileOperations = new S3FileOperations {