diff --git a/pkg/snapshot/file/publisher.go b/pkg/snapshot/file/publisher.go
index 8a77325..c13025d 100644
--- a/pkg/snapshot/file/publisher.go
+++ b/pkg/snapshot/file/publisher.go
@@ -191,9 +191,9 @@ func (p *publisher) PublishHeader(header *types.Header) error {
 		header.Hash().Hex(),
 		header.ParentHash.Hex(),
 		headerNode.Cid().String(),
-		0,
+		"0",
 		pq.StringArray([]string{p.nodeInfo.ID}),
-		0,
+		"0",
 		header.Root.Hex(),
 		header.TxHash.Hex(),
 		header.ReceiptHash.Hex(),