diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 3dc1e38ada0..987c863bfb5 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -844,6 +844,9 @@ AddNewAttributeTuples(Oid new_rel_oid,
 	/* add dependencies on their datatypes and collations */
 	for (int i = 0; i < natts; i++)
 	{
+		if (tupdesc->attrs[i].attisdropped)
+			continue;
+
 		/* Add dependency info */
 		ObjectAddressSubSet(myself, RelationRelationId, new_rel_oid, i + 1);
 		ObjectAddressSet(referenced, TypeRelationId,