diff --git a/provider/lpseal/finalize_pieces.go b/provider/lpseal/finalize_pieces.go
new file mode 100644
index 000000000..8d52bf331
--- /dev/null
+++ b/provider/lpseal/finalize_pieces.go
@@ -0,0 +1,51 @@
+package lpseal
+
+import (
+	"context"
+	"net/url"
+	"strconv"
+
+	"golang.org/x/xerrors"
+
+	"github.com/filecoin-project/go-state-types/abi"
+
+	"github.com/filecoin-project/lotus/lib/harmony/harmonydb"
+)
+
+func DropSectorPieceRefs(ctx context.Context, db *harmonydb.DB, sid abi.SectorID) error {
+	//_, err := db.Exec(ctx, `SELECT FROM sectors_sdr_initial_pieces WHERE sp_id = $1 AND sector_number = $2`, sid.Miner, sid.Number)
+
+	var PieceURL []struct {
+		URL string `db:"data_url"`
+	}
+
+	err := db.Select(ctx, &PieceURL, `SELECT data_url FROM sectors_sdr_initial_pieces WHERE sp_id = $1 AND sector_number = $2`, sid.Miner, sid.Number)
+	if err != nil {
+		return xerrors.Errorf("getting piece url: %w", err)
+	}
+
+	for _, pu := range PieceURL {
+		gourl, err := url.Parse(pu.URL)
+		if err != nil {
+			log.Errorw("failed to parse piece url", "url", pu.URL, "error", err, "miner", sid.Miner, "sector", sid.Number)
+			continue
+		}
+
+		if gourl.Scheme == "pieceref" {
+			refID, err := strconv.ParseInt(gourl.Opaque, 10, 64)
+			if err != nil {
+				log.Errorw("failed to parse piece ref id", "url", pu.URL, "error", err, "miner", sid.Miner, "sector", sid.Number)
+				continue
+			}
+
+			n, err := db.Exec(ctx, `DELETE FROM parked_piece_refs WHERE ref_id = $1`, refID)
+			if err != nil {
+				log.Errorw("failed to delete piece ref", "url", pu.URL, "error", err, "miner", sid.Miner, "sector", sid.Number)
+			}
+
+			log.Debugw("deleted piece ref", "url", pu.URL, "miner", sid.Miner, "sector", sid.Number, "rows", n)
+		}
+	}
+
+	return err
+}
diff --git a/provider/lpseal/task_finalize.go b/provider/lpseal/task_finalize.go
index 8d425f76a..6246af733 100644
--- a/provider/lpseal/task_finalize.go
+++ b/provider/lpseal/task_finalize.go
@@ -69,6 +69,10 @@ func (f *FinalizeTask) Do(taskID harmonytask.TaskID, stillOwned func() bool) (do
 		return false, xerrors.Errorf("finalizing sector: %w", err)
 	}
 
+	if err := DropSectorPieceRefs(ctx, f.db, sector.ID); err != nil {
+		return false, xerrors.Errorf("dropping sector piece refs: %w", err)
+	}
+
 	// set after_finalize
 	_, err = f.db.Exec(ctx, `update sectors_sdr_pipeline set after_finalize=true where task_id_finalize=$1`, taskID)
 	if err != nil {