diff --git a/cmd/lotus-seed/genesis.go b/cmd/lotus-seed/genesis.go
index 87493c58a..66de93888 100644
--- a/cmd/lotus-seed/genesis.go
+++ b/cmd/lotus-seed/genesis.go
@@ -59,7 +59,7 @@ var genesisNewCmd = &cli.Command{
 			return xerrors.New("seed genesis new [genesis.json]")
 		}
 		out := genesis.Template{
-			NetworkVersion:   network.Version0,
+			NetworkVersion:   build.NewestNetworkVersion,
 			Accounts:         []genesis.Actor{},
 			Miners:           []genesis.Miner{},
 			VerifregRootKey:  gen.DefaultVerifregRootkeyActor,
diff --git a/cmd/lotus-seed/main.go b/cmd/lotus-seed/main.go
index c92397125..42f4b74e4 100644
--- a/cmd/lotus-seed/main.go
+++ b/cmd/lotus-seed/main.go
@@ -96,7 +96,6 @@ var preSealCmd = &cli.Command{
 		},
 		&cli.IntFlag{
 			Name:  "network-version",
-			Value: 0,
 			Usage: "specify network version",
 		},
 	},
@@ -134,7 +133,12 @@ var preSealCmd = &cli.Command{
 		}
 		sectorSize := abi.SectorSize(sectorSizeInt)
 
-		spt, err := miner.SealProofTypeFromSectorSize(sectorSize, network.Version(c.Uint64("network-version")))
+		nv := build.NewestNetworkVersion
+		if c.IsSet("network-version") {
+			nv = network.Version(c.Uint64("network-version"))
+		}
+
+		spt, err := miner.SealProofTypeFromSectorSize(sectorSize, nv)
 		if err != nil {
 			return err
 		}
diff --git a/lotuspond/spawn.go b/lotuspond/spawn.go
index 9085bc24a..900c372b1 100644
--- a/lotuspond/spawn.go
+++ b/lotuspond/spawn.go
@@ -11,6 +11,9 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/filecoin-project/lotus/build"
+	"github.com/filecoin-project/lotus/chain/actors/builtin/miner"
+
 	"github.com/google/uuid"
 	"golang.org/x/xerrors"
 
@@ -48,7 +51,12 @@ func (api *api) Spawn() (nodeInfo, error) {
 		}
 
 		sbroot := filepath.Join(dir, "preseal")
-		genm, ki, err := seed.PreSeal(genMiner, abi.RegisteredSealProof_StackedDrg2KiBV1, 0, 2, sbroot, []byte("8"), nil, false)
+		spt, err := miner.SealProofTypeFromSectorSize(2<<10, build.NewestNetworkVersion)
+		if err != nil {
+			return nodeInfo{}, err
+		}
+
+		genm, ki, err := seed.PreSeal(genMiner, spt, 0, 2, sbroot, []byte("8"), nil, false)
 		if err != nil {
 			return nodeInfo{}, xerrors.Errorf("preseal failed: %w", err)
 		}
@@ -71,6 +79,7 @@ func (api *api) Spawn() (nodeInfo, error) {
 		template.VerifregRootKey = gen.DefaultVerifregRootkeyActor
 		template.RemainderAccount = gen.DefaultRemainderAccountActor
 		template.NetworkName = "pond-" + uuid.New().String()
+		template.NetworkVersion = build.NewestNetworkVersion
 
 		tb, err := json.Marshal(&template)
 		if err != nil {