diff --git a/frigate/review/maintainer.py b/frigate/review/maintainer.py
index 82e5f66bd..b01baf1bf 100644
--- a/frigate/review/maintainer.py
+++ b/frigate/review/maintainer.py
@@ -140,7 +140,7 @@ class PendingReviewSegment:
                 "zones": list(self.zones),
                 "audio": list(self.audio),
             },
-        }
+        }.copy()
 
 
 class ReviewSegmentMaintainer(threading.Thread):