diff --git a/chain/gen/mining.go b/chain/gen/mining.go
index 4889c632f..5fc56e8b2 100644
--- a/chain/gen/mining.go
+++ b/chain/gen/mining.go
@@ -27,7 +27,17 @@ func MinerCreateBlock(ctx context.Context, sm *stmgr.StateManager, w api.WalletA
 		return nil, xerrors.Errorf("failed to load tipset state: %w", err)
 	}
 
-	worker, err := stmgr.GetMinerWorkerRaw(ctx, sm, st, bt.Miner)
+	lbts, err := stmgr.GetLookbackTipSetForRound(ctx, sm, pts, bt.Epoch)
+	if err != nil {
+		return nil, xerrors.Errorf("getting lookback miner actor state: %w", err)
+	}
+
+	lbst, _, err := sm.TipSetState(ctx, lbts)
+	if err != nil {
+		return nil, err
+	}
+
+	worker, err := stmgr.GetMinerWorkerRaw(ctx, sm, lbst, bt.Miner)
 	if err != nil {
 		return nil, xerrors.Errorf("failed to get miner worker: %w", err)
 	}
diff --git a/miner/miner.go b/miner/miner.go
index 7451d617a..7de7f5b73 100644
--- a/miner/miner.go
+++ b/miner/miner.go
@@ -386,7 +386,7 @@ func (m *Miner) mineOne(ctx context.Context, base *MiningBase) (*types.BlockMsg,
 		rbase = bvals[len(bvals)-1]
 	}
 
-	ticket, err := m.computeTicket(ctx, &rbase, base)
+	ticket, err := m.computeTicket(ctx, &rbase, base, mbi)
 	if err != nil {
 		return nil, xerrors.Errorf("scratching ticket failed: %w", err)
 	}
@@ -456,16 +456,7 @@ func (m *Miner) mineOne(ctx context.Context, base *MiningBase) (*types.BlockMsg,
 	return b, nil
 }
 
-func (m *Miner) computeTicket(ctx context.Context, brand *types.BeaconEntry, base *MiningBase) (*types.Ticket, error) {
-	mi, err := m.api.StateMinerInfo(ctx, m.address, types.EmptyTSK)
-	if err != nil {
-		return nil, err
-	}
-	worker, err := m.api.StateAccountKey(ctx, mi.Worker, types.EmptyTSK)
-	if err != nil {
-		return nil, err
-	}
-
+func (m *Miner) computeTicket(ctx context.Context, brand *types.BeaconEntry, base *MiningBase, mbi *api.MiningBaseInfo) (*types.Ticket, error) {
 	buf := new(bytes.Buffer)
 	if err := m.address.MarshalCBOR(buf); err != nil {
 		return nil, xerrors.Errorf("failed to marshal address to cbor: %w", err)
@@ -481,7 +472,7 @@ func (m *Miner) computeTicket(ctx context.Context, brand *types.BeaconEntry, bas
 		return nil, err
 	}
 
-	vrfOut, err := gen.ComputeVRF(ctx, m.api.WalletSign, worker, input)
+	vrfOut, err := gen.ComputeVRF(ctx, m.api.WalletSign, mbi.WorkerKey, input)
 	if err != nil {
 		return nil, err
 	}