diff --git a/build/params_calibnet.go b/build/params_calibnet.go
index bfce0c8d0..4b3ae329f 100644
--- a/build/params_calibnet.go
+++ b/build/params_calibnet.go
@@ -74,7 +74,7 @@ const UpgradeSharkHeight = 16800 // 6 days after genesis
 const UpgradeHyggeHeight = math.MaxInt64
 
 // dummy
-var UpgradeHyperspaceNV19Height = abi.ChainEpoch(math.MaxInt64)
+var UpgradeHyperspaceNV19Height = abi.ChainEpoch(math.MaxInt64 - 1)
 
 // dummy
 var UpgradeHyperspaceNV20Height = abi.ChainEpoch(math.MaxInt64)
diff --git a/build/params_interop.go b/build/params_interop.go
index cd5299f17..1c2ad61e2 100644
--- a/build/params_interop.go
+++ b/build/params_interop.go
@@ -53,9 +53,9 @@ var UpgradeSkyrHeight = abi.ChainEpoch(-19)
 
 const UpgradeSharkHeight = abi.ChainEpoch(-20)
 
-const UpgradeHyggeHeight = abi.ChainEpoch(99999999999999)
+const UpgradeHyggeHeight = abi.ChainEpoch(math.MaxInt64 - 2)
 
-var UpgradeHyperspaceNV19Height = abi.ChainEpoch(99999999999999)
+var UpgradeHyperspaceNV19Height = abi.ChainEpoch(math.MaxInt64 - 1)
 
 var UpgradeHyperspaceNV20Height = abi.ChainEpoch(math.MaxInt64)
 
diff --git a/build/params_mainnet.go b/build/params_mainnet.go
index 42b7ec32d..35561a281 100644
--- a/build/params_mainnet.go
+++ b/build/params_mainnet.go
@@ -87,10 +87,10 @@ const UpgradeSkyrHeight = 1960320
 const UpgradeSharkHeight = 2383680
 
 // ??????????????
-var UpgradeHyggeHeight = abi.ChainEpoch(math.MaxInt64 - 1)
+var UpgradeHyggeHeight = abi.ChainEpoch(math.MaxInt64 - 2)
 
 // ??????????????
-var UpgradeHyperspaceNV19Height = abi.ChainEpoch(math.MaxInt64)
+var UpgradeHyperspaceNV19Height = abi.ChainEpoch(math.MaxInt64 - 1)
 
 // dummy
 var UpgradeHyperspaceNV20Height = abi.ChainEpoch(math.MaxInt64)