diff --git a/chain/gen/genesis/miners.go b/chain/gen/genesis/miners.go
index 2c0b76760d9..1d95275df93 100644
--- a/chain/gen/genesis/miners.go
+++ b/chain/gen/genesis/miners.go
@@ -6,30 +6,6 @@ import (
 	"fmt"
 	"math/rand"
 
-	power4 "github.com/filecoin-project/specs-actors/v4/actors/builtin/power"
-
-	reward4 "github.com/filecoin-project/specs-actors/v4/actors/builtin/reward"
-
-	market4 "github.com/filecoin-project/specs-actors/v4/actors/builtin/market"
-
-	"github.com/filecoin-project/lotus/chain/actors"
-
-	"github.com/filecoin-project/lotus/chain/actors/builtin"
-
-	"github.com/filecoin-project/lotus/chain/actors/policy"
-
-	"github.com/filecoin-project/lotus/chain/actors/adt"
-
-	"github.com/filecoin-project/go-state-types/network"
-
-	market0 "github.com/filecoin-project/specs-actors/actors/builtin/market"
-
-	"github.com/filecoin-project/lotus/chain/actors/builtin/power"
-	"github.com/filecoin-project/lotus/chain/actors/builtin/reward"
-
-	"github.com/filecoin-project/lotus/chain/actors/builtin/market"
-	"github.com/filecoin-project/lotus/chain/actors/builtin/miner"
-
 	"github.com/ipfs/go-cid"
 	cbor "github.com/ipfs/go-ipld-cbor"
 	cbg "github.com/whyrusleeping/cbor-gen"
@@ -39,12 +15,28 @@ import (
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/go-state-types/big"
 	"github.com/filecoin-project/go-state-types/crypto"
+	"github.com/filecoin-project/go-state-types/network"
+
 	builtin0 "github.com/filecoin-project/specs-actors/actors/builtin"
+	market0 "github.com/filecoin-project/specs-actors/actors/builtin/market"
 	miner0 "github.com/filecoin-project/specs-actors/actors/builtin/miner"
 	power0 "github.com/filecoin-project/specs-actors/actors/builtin/power"
 	reward0 "github.com/filecoin-project/specs-actors/actors/builtin/reward"
+	market2 "github.com/filecoin-project/specs-actors/v2/actors/builtin/market"
+	reward2 "github.com/filecoin-project/specs-actors/v2/actors/builtin/reward"
+	market4 "github.com/filecoin-project/specs-actors/v4/actors/builtin/market"
+	power4 "github.com/filecoin-project/specs-actors/v4/actors/builtin/power"
+	reward4 "github.com/filecoin-project/specs-actors/v4/actors/builtin/reward"
 	runtime5 "github.com/filecoin-project/specs-actors/v5/actors/runtime"
 
+	"github.com/filecoin-project/lotus/chain/actors"
+	"github.com/filecoin-project/lotus/chain/actors/adt"
+	"github.com/filecoin-project/lotus/chain/actors/builtin"
+	"github.com/filecoin-project/lotus/chain/actors/builtin/market"
+	"github.com/filecoin-project/lotus/chain/actors/builtin/miner"
+	"github.com/filecoin-project/lotus/chain/actors/builtin/power"
+	"github.com/filecoin-project/lotus/chain/actors/builtin/reward"
+	"github.com/filecoin-project/lotus/chain/actors/policy"
 	"github.com/filecoin-project/lotus/chain/state"
 	"github.com/filecoin-project/lotus/chain/store"
 	"github.com/filecoin-project/lotus/chain/types"
@@ -404,8 +396,8 @@ func SetupStorageMiners(ctx context.Context, cs *store.ChainStore, sys vm.Syscal
 					return cid.Undef, xerrors.Errorf("failed to confirm presealed sectors: %w", err)
 				}
 
-				if av > actors.Version2 {
-					// post v2, we need to explicitly Claim this power since ConfirmSectorProofsValid doesn't do it anymore
+				if av >= actors.Version2 {
+					// post v0, we need to explicitly Claim this power since ConfirmSectorProofsValid doesn't do it anymore
 					claimParams := &power4.UpdateClaimedPowerParams{
 						RawByteDelta:         types.NewInt(uint64(m.SectorSize)),
 						QualityAdjustedDelta: sectorWeight,
@@ -537,7 +529,6 @@ func dealWeight(ctx context.Context, vm *vm.VM, maddr address.Address, dealIDs [
 			SectorExpiry: sectorExpiry,
 		}
 
-		var dealWeights market0.VerifyDealsForActivationReturn
 		ret, err := doExecValue(ctx, vm,
 			market.Address,
 			maddr,
@@ -548,11 +539,23 @@ func dealWeight(ctx context.Context, vm *vm.VM, maddr address.Address, dealIDs [
 		if err != nil {
 			return big.Zero(), big.Zero(), err
 		}
-		if err := dealWeights.UnmarshalCBOR(bytes.NewReader(ret)); err != nil {
+		var weight, verifiedWeight abi.DealWeight
+		if av < actors.Version2 {
+			var dealWeights market0.VerifyDealsForActivationReturn
+			err = dealWeights.UnmarshalCBOR(bytes.NewReader(ret))
+			weight = dealWeights.DealWeight
+			verifiedWeight = dealWeights.VerifiedDealWeight
+		} else {
+			var dealWeights market2.VerifyDealsForActivationReturn
+			err = dealWeights.UnmarshalCBOR(bytes.NewReader(ret))
+			weight = dealWeights.DealWeight
+			verifiedWeight = dealWeights.VerifiedDealWeight
+		}
+		if err != nil {
 			return big.Zero(), big.Zero(), err
 		}
 
-		return dealWeights.DealWeight, dealWeights.VerifiedDealWeight, nil
+		return weight, verifiedWeight, nil
 	}
 	params := &market4.VerifyDealsForActivationParams{Sectors: []market4.SectorDeals{{
 		SectorExpiry: sectorExpiry,
@@ -584,7 +587,8 @@ func currentEpochBlockReward(ctx context.Context, vm *vm.VM, maddr address.Addre
 	}
 
 	// TODO: This hack should move to reward actor wrapper
-	if av <= actors.Version2 {
+	switch av {
+	case actors.Version0:
 		var epochReward reward0.ThisEpochRewardReturn
 
 		if err := epochReward.UnmarshalCBOR(bytes.NewReader(rwret)); err != nil {
@@ -592,6 +596,14 @@ func currentEpochBlockReward(ctx context.Context, vm *vm.VM, maddr address.Addre
 		}
 
 		return epochReward.ThisEpochBaselinePower, *epochReward.ThisEpochRewardSmoothed, nil
+	case actors.Version2:
+		var epochReward reward2.ThisEpochRewardReturn
+
+		if err := epochReward.UnmarshalCBOR(bytes.NewReader(rwret)); err != nil {
+			return big.Zero(), builtin.FilterEstimate{}, err
+		}
+
+		return epochReward.ThisEpochBaselinePower, builtin.FilterEstimate(epochReward.ThisEpochRewardSmoothed), nil
 	}
 
 	var epochReward reward4.ThisEpochRewardReturn