diff --git a/src/backend/access/heap/heapam.c b/src/backend/access/heap/heapam.c
index b8f4fe5..9846b9f 100644
--- a/src/backend/access/heap/heapam.c
+++ b/src/backend/access/heap/heapam.c
@@ -5403,6 +5403,16 @@ l4:
 			return HeapTupleMayBeUpdated;
 		}
 
+		/*
+		 * Also check Xmin: if this tuple was created by an aborted
+		 * transaction, we're done.
+		 */
+		if (TransactionIdDidAbort(HeapTupleHeaderGetXmin(mytup.t_data)))
+		{
+			UnlockReleaseBuffer(buf);
+			return HeapTupleMayBeUpdated;
+		}
+
 		old_infomask = mytup.t_data->t_infomask;
 		old_infomask2 = mytup.t_data->t_infomask2;
 		xmax = HeapTupleHeaderGetRawXmax(mytup.t_data);