diff --git a/robosystems_client/clients/ledger_client.py b/robosystems_client/clients/ledger_client.py
index 9da3896..0e2ffc9 100644
--- a/robosystems_client/clients/ledger_client.py
+++ b/robosystems_client/clients/ledger_client.py
@@ -786,6 +786,7 @@
 # ``ReportDownloadFormat`` enum names used as query variables.
 _DOWNLOAD_FORMAT_ALIASES = {
   "holon-jsonld": "HOLON_JSONLD",
+  "holon-jsonld-lineage": "HOLON_JSONLD_LINEAGE",
   "xbrl-2.1": "XBRL_2_1",
   "tavi": "TAVI",
 }
@@ -3782,8 +3783,12 @@ def download_report_bundle(
         format: Serialization flavor — ``"holon-jsonld"`` (default, the
             dataset-form scene/boundary/projection holon, which carries
             the whole report and is stamped at publish), ``"tavi"`` (the
-            Project Tavi compiled model), or ``"xbrl-2.1"``. The enum names ``"TAVI"`` /
-            ``"HOLON_JSONLD"`` / ``"XBRL_2_1"`` are also accepted.
+            Project Tavi compiled model), ``"xbrl-2.1"``, or
+            ``"holon-jsonld-lineage"`` (the holon with its ``#lineage`` graph:
+            the ledger lines, entries and events behind every frozen figure,
+            for this graph's own members). The enum names ``"TAVI"`` /
+            ``"HOLON_JSONLD"`` / ``"HOLON_JSONLD_LINEAGE"`` / ``"XBRL_2_1"``
+            are also accepted.
         to: Optional file path to write the bytes to. When set, the
             returned ``ReportBundleDownload.path`` points at the
             written file.
@@ -3830,6 +3835,7 @@ def download_report_bundle(
     default_ext = {
       "XBRL_2_1": "zip",
       "HOLON_JSONLD": "holon.jsonld",
+      "HOLON_JSONLD_LINEAGE": "lineage.holon.jsonld",
     }.get(gql_format, "tavi.json")
     filename = (
       _parse_filename(artifact.headers.get("content-disposition", ""))
diff --git a/tests/test_ledger_client.py b/tests/test_ledger_client.py
index 347c773..864b33d 100644
--- a/tests/test_ledger_client.py
+++ b/tests/test_ledger_client.py
@@ -3252,6 +3252,28 @@ def test_default_download_is_the_holon(self, mock_client_cls, mock_config, graph
     # The bytes come from following the presigned URL.
     assert mock_client.get.call_args.args[0].startswith("https://s3.example.com/")
 
+  @patch("robosystems_client.clients.ledger_client.httpx.Client")
+  def test_lineage_download_takes_the_short_alias(
+    self, mock_client_cls, mock_config, graph_id
+  ):
+    """``holon-jsonld-lineage`` names the lineage holon; with no filename from
+    the server it lands as ``.lineage.holon.jsonld``, never ``.tavi.json``."""
+    artifact = self._mock_artifact(b'{"@graph": []}', "")
+    artifact.headers = {}
+    self._patch_httpx(mock_client_cls, artifact)
+    with patch.object(
+      LedgerClient,
+      "_query",
+      return_value=self._gql_data("application/ld+json", "holon-jsonld-lineage", gen=3),
+    ) as mock_query:
+      result = LedgerClient(mock_config).download_report_bundle(
+        graph_id, "rpt_01", format="holon-jsonld-lineage"
+      )
+
+    assert mock_query.call_args.args[2]["format"] == "HOLON_JSONLD_LINEAGE"
+    assert result.format == "holon-jsonld-lineage"
+    assert result.filename == "rpt_01-g3.lineage.holon.jsonld"
+
   @patch("robosystems_client.clients.ledger_client.httpx.Client")
   def test_xbrl_download_follows_presigned_url(
     self, mock_client_cls, mock_config, graph_id