diff --git a/backend/services/recent.py b/backend/services/recent.py
index 7c4b00f..4129cd2 100644
--- a/backend/services/recent.py
+++ b/backend/services/recent.py
@@ -117,7 +117,7 @@ def list_recent(
     for v_name, f in recent:
         iso_modified = f.get("modified", "")
         try:
-            mtime_dt = datetime.fromisoformat(iso_modified.replace("Z", "+00:00"))
+            mtime_dt = datetime.fromisoformat(iso_modified)
             mtime_val = mtime_dt.timestamp()
         except Exception:
             mtime_val = time.time()