diff --git a/build/params_2k.go b/build/params_2k.go
index 4fb4df183..b0fd309d3 100644
--- a/build/params_2k.go
+++ b/build/params_2k.go
@@ -65,6 +65,8 @@ var UpgradeHyperspaceNV19Height = abi.ChainEpoch(60)
 
 var UpgradeHyperspaceNV20Height = abi.ChainEpoch(120)
 
+var UpgradeHyperspaceNV21Height = abi.ChainEpoch(150)
+
 var DrandSchedule = map[abi.ChainEpoch]DrandEnum{
 	0: DrandMainnet,
 }
diff --git a/build/params_butterfly.go b/build/params_butterfly.go
index 9e77bfd90..805459cbe 100644
--- a/build/params_butterfly.go
+++ b/build/params_butterfly.go
@@ -57,6 +57,8 @@ var UpgradeHyperspaceNV19Height = abi.ChainEpoch(100)
 
 var UpgradeHyperspaceNV20Height = abi.ChainEpoch(120)
 
+var UpgradeHyperspaceNV21Height = abi.ChainEpoch(150)
+
 var SupportedProofTypes = []abi.RegisteredSealProof{
 	abi.RegisteredSealProof_StackedDrg512MiBV1,
 	abi.RegisteredSealProof_StackedDrg32GiBV1,
diff --git a/build/params_calibnet.go b/build/params_calibnet.go
index 2105fede9..9ff509541 100644
--- a/build/params_calibnet.go
+++ b/build/params_calibnet.go
@@ -75,10 +75,13 @@ const UpgradeSharkHeight = 16800 // 6 days after genesis
 const UpgradeHyggeHeight = 322354
 
 // dummy
-var UpgradeHyperspaceNV19Height = abi.ChainEpoch(math.MaxInt64 - 1)
+var UpgradeHyperspaceNV19Height = abi.ChainEpoch(math.MaxInt64 - 2)
 
 // dummy
-var UpgradeHyperspaceNV20Height = abi.ChainEpoch(math.MaxInt64)
+var UpgradeHyperspaceNV20Height = abi.ChainEpoch(math.MaxInt64 - 1)
+
+// dummy
+var UpgradeHyperspaceNV21Height = abi.ChainEpoch(math.MaxInt64)
 
 var SupportedProofTypes = []abi.RegisteredSealProof{
 	abi.RegisteredSealProof_StackedDrg32GiBV1,
diff --git a/build/params_interop.go b/build/params_interop.go
index 1c2ad61e2..ada60af2c 100644
--- a/build/params_interop.go
+++ b/build/params_interop.go
@@ -53,11 +53,13 @@ var UpgradeSkyrHeight = abi.ChainEpoch(-19)
 
 const UpgradeSharkHeight = abi.ChainEpoch(-20)
 
-const UpgradeHyggeHeight = abi.ChainEpoch(math.MaxInt64 - 2)
+const UpgradeHyggeHeight = abi.ChainEpoch(math.MaxInt64 - 3)
 
-var UpgradeHyperspaceNV19Height = abi.ChainEpoch(math.MaxInt64 - 1)
+var UpgradeHyperspaceNV19Height = abi.ChainEpoch(math.MaxInt64 - 2)
 
-var UpgradeHyperspaceNV20Height = abi.ChainEpoch(math.MaxInt64)
+var UpgradeHyperspaceNV20Height = abi.ChainEpoch(math.MaxInt64 - 1)
+
+var UpgradeHyperspaceNV21Height = abi.ChainEpoch(math.MaxInt64)
 
 var DrandSchedule = map[abi.ChainEpoch]DrandEnum{
 	0: DrandMainnet,
diff --git a/build/params_mainnet.go b/build/params_mainnet.go
index 35561a281..883288d00 100644
--- a/build/params_mainnet.go
+++ b/build/params_mainnet.go
@@ -90,10 +90,13 @@ const UpgradeSharkHeight = 2383680
 var UpgradeHyggeHeight = abi.ChainEpoch(math.MaxInt64 - 2)
 
 // ??????????????
-var UpgradeHyperspaceNV19Height = abi.ChainEpoch(math.MaxInt64 - 1)
+var UpgradeHyperspaceNV19Height = abi.ChainEpoch(math.MaxInt64 - 2)
 
 // dummy
-var UpgradeHyperspaceNV20Height = abi.ChainEpoch(math.MaxInt64)
+var UpgradeHyperspaceNV20Height = abi.ChainEpoch(math.MaxInt64 - 1)
+
+// dummy
+var UpgradeHyperspaceNV21Height = abi.ChainEpoch(math.MaxInt64)
 
 var SupportedProofTypes = []abi.RegisteredSealProof{
 	abi.RegisteredSealProof_StackedDrg32GiBV1,