diff --git a/app/workers/marker_worker.py b/app/workers/marker_worker.py
index 20302ee..d653866 100644
--- a/app/workers/marker_worker.py
+++ b/app/workers/marker_worker.py
@@ -167,8 +167,13 @@ async def process(document_id: int, session: AsyncSession) -> None:
             return
         logger.exception(f"[marker] http error id={document_id}: {exc}")
         raise
-    except (httpx.ConnectError, httpx.TimeoutException) as exc:
-        logger.warning(f"[marker] transient error id={document_id}: {exc}")
+    except httpx.TransportError as exc:
+        # transport 계층 오류 — Connect/Read/Write/RemoteProtocol/Timeout 류 전부 transient.
+        # marker-service 응답끊김(RemoteProtocolError) / 모델 워밍업 / 큰 PDF I/O 끊김 등에서 발생.
+        # queue retry 대상 (max_attempts 까지 자동 재시도).
+        logger.warning(
+            f"[marker] transient error id={document_id} kind={type(exc).__name__}: {exc}"
+        )
         raise
     except Exception as exc:
         logger.exception(f"[marker] unexpected error id={document_id}: {exc}")