diff --git a/music-lab/app/db.py b/music-lab/app/db.py
index de3462d..744d463 100644
--- a/music-lab/app/db.py
+++ b/music-lab/app/db.py
@@ -1030,6 +1030,15 @@ def _parse_pipeline_row(row: sqlite3.Row) -> Dict[str, Any]:
         d["metadata"] = json.loads(d["metadata_json"])
     if d.get("review_json"):
         d["review"] = json.loads(d["review_json"])
+
+    # Cache-bust media URLs — append ?v={updated_at_compact} so browsers/telegram fetch fresh after regen
+    updated_at = d.get("updated_at", "") or ""
+    if updated_at:
+        cache_key = updated_at.replace(":", "").replace("-", "").replace("T", "").replace(".", "")
+        for url_key in ("cover_url", "video_url", "thumbnail_url"):
+            url = d.get(url_key)
+            if url and "?" not in url:
+                d[url_key] = f"{url}?v={cache_key}"
     return d