diff --git a/chain/gen/genesis/miners.go b/chain/gen/genesis/miners.go
index c7ef3962f..bcc13aa5d 100644
--- a/chain/gen/genesis/miners.go
+++ b/chain/gen/genesis/miners.go
@@ -6,6 +6,8 @@ import (
 	"fmt"
 	"math/rand"
 
+	builtin6 "github.com/filecoin-project/specs-actors/v6/actors/builtin"
+
 	"github.com/ipfs/go-cid"
 	cbor "github.com/ipfs/go-ipld-cbor"
 	cbg "github.com/whyrusleeping/cbor-gen"
@@ -399,11 +401,24 @@ func SetupStorageMiners(ctx context.Context, cs *store.ChainStore, sys vm.Syscal
 				}
 
 				// Commit one-by-one, otherwise pledge math tends to explode
-				confirmParams := &builtin0.ConfirmSectorProofsParams{
-					Sectors: []abi.SectorNumber{preseal.SectorID},
+				var paramBytes []byte
+
+				if av >= actors.Version6 {
+					// TODO: fixup
+					confirmParams := &builtin6.ConfirmSectorProofsParams{
+						Sectors: []abi.SectorNumber{preseal.SectorID},
+					}
+
+					paramBytes = mustEnc(confirmParams)
+				} else {
+					confirmParams := &builtin0.ConfirmSectorProofsParams{
+						Sectors: []abi.SectorNumber{preseal.SectorID},
+					}
+
+					paramBytes = mustEnc(confirmParams)
 				}
 
-				_, err = doExecValue(ctx, vm, minerInfos[i].maddr, power.Address, big.Zero(), miner.Methods.ConfirmSectorProofsValid, mustEnc(confirmParams))
+				_, err = doExecValue(ctx, vm, minerInfos[i].maddr, power.Address, big.Zero(), miner.Methods.ConfirmSectorProofsValid, paramBytes)
 				if err != nil {
 					return cid.Undef, xerrors.Errorf("failed to confirm presealed sectors: %w", err)
 				}
diff --git a/extern/storage-sealing/states_failed_test.go b/extern/storage-sealing/states_failed_test.go
index 8c22462ac..22c245afd 100644
--- a/extern/storage-sealing/states_failed_test.go
+++ b/extern/storage-sealing/states_failed_test.go
@@ -5,6 +5,8 @@ import (
 	"context"
 	"testing"
 
+	"github.com/filecoin-project/go-state-types/network"
+
 	market0 "github.com/filecoin-project/specs-actors/actors/builtin/market"
 
 	"github.com/golang/mock/gomock"
@@ -59,6 +61,7 @@ func TestStateRecoverDealIDs(t *testing.T) {
 				}),
 			},
 		}, nil)
+		api.EXPECT().StateNetworkVersion(ctx, nil).Return(network.Version0, nil)
 		api.EXPECT().StateMarketStorageDeal(ctx, dealId, nil).Return(&api2.MarketDeal{
 			Proposal: dealProposal,
 		}, nil)