diff --git a/app/models/queue.py b/app/models/queue.py
index a621d2b..18c574e 100644
--- a/app/models/queue.py
+++ b/app/models/queue.py
@@ -21,7 +21,7 @@ class ProcessingQueue(Base):
         # DB enum 변경은 마이그레이션이 처리하므로 create_type=False.
         Enum(
             "extract", "classify", "summarize", "embed", "chunk", "preview",
-            "stt", "thumbnail", "deep_summary",
+            "stt", "thumbnail", "deep_summary", "markdown",
             name="process_stage",
             create_type=False,
         ),