diff --git a/build/bootstrap/butterflynet.pi b/build/bootstrap/butterflynet.pi
index 5b10e2bc4..ce71427d5 100644
--- a/build/bootstrap/butterflynet.pi
+++ b/build/bootstrap/butterflynet.pi
@@ -1,2 +1,2 @@
-/dns4/bootstrap-0.butterfly.fildev.network/tcp/1347/p2p/12D3KooWCa1wgMMBB9JjA2kYqaN1v5uh7xvcsc2gQJBHzPp7G57H
-/dns4/bootstrap-1.butterfly.fildev.network/tcp/1347/p2p/12D3KooWD6fCvo1dyci6wsjTLyv7eJK73pCVz6RCQjbtPvbc8LYw
+/dns4/bootstrap-0.butterfly.fildev.network/tcp/1347/p2p/12D3KooWMQBVoPirSWwrNr9QBj6RhGa48NGAeyr4cZvMMAzSEUZW
+/dns4/bootstrap-1.butterfly.fildev.network/tcp/1347/p2p/12D3KooWQ2Q1yhD799kSDcbjeb5mr4ZSCK2PsGa4gyBZemfgx1uT
diff --git a/build/genesis/butterflynet.car b/build/genesis/butterflynet.car
index 589e5ab75..dcc70f511 100644
Binary files a/build/genesis/butterflynet.car and b/build/genesis/butterflynet.car differ
diff --git a/build/params_calibnet.go b/build/params_calibnet.go
index a48fa5fda..3a206b1a7 100644
--- a/build/params_calibnet.go
+++ b/build/params_calibnet.go
@@ -73,11 +73,11 @@ const UpgradeSharkHeight = 16800 // 6 days after genesis
 // 2023-02-21T16:30:00Z
 const UpgradeHyggeHeight = 322354
 
-// ??????????
-const UpgradeLightningHeight = 999999999999999
+// 2023-04-18T16:30:00Z
+const UpgradeLightningHeight = 483634
 
-// ??????????????????
-const UpgradeThunderHeight = UpgradeLightningHeight + 1
+// 2023-04-20T16:30:00Z
+const UpgradeThunderHeight = UpgradeLightningHeight + 5760
 
 var SupportedProofTypes = []abi.RegisteredSealProof{
 	abi.RegisteredSealProof_StackedDrg32GiBV1,
diff --git a/chain/consensus/filcns/upgrades.go b/chain/consensus/filcns/upgrades.go
index 5754c4bea..c82ad6a5c 100644
--- a/chain/consensus/filcns/upgrades.go
+++ b/chain/consensus/filcns/upgrades.go
@@ -1778,9 +1778,9 @@ func upgradeActorsV11Common(
 		return cid.Undef, xerrors.Errorf("failed to decode state root: %w", err)
 	}
 
-	if stateRoot.Version != types.StateTreeVersion5 {
+	if stateRoot.Version != types.StateTreeVersion4 {
 		return cid.Undef, xerrors.Errorf(
-			"expected state root version 4 for actors v10 upgrade, got %d",
+			"expected state root version 4 for actors v11 upgrade, got %d",
 			stateRoot.Version,
 		)
 	}