diff --git a/app/app.go b/app/app.go
index 03cf3bdb5..e9e4070a4 100644
--- a/app/app.go
+++ b/app/app.go
@@ -37,7 +37,7 @@ import (
 	servicemetrics "github.com/skip-mev/slinky/service/metrics"
 
 	v401 "github.com/neutron-org/neutron/v4/app/upgrades/v4.0.1"
-	v402 "github.com/neutron-org/neutron/v4/app/upgrades/v4.2.0"
+	v421testnet "github.com/neutron-org/neutron/v4/app/upgrades/v4.2.1-testnet"
 	"github.com/neutron-org/neutron/v4/x/globalfee"
 	globalfeetypes "github.com/neutron-org/neutron/v4/x/globalfee/types"
 
@@ -226,7 +226,7 @@ const (
 )
 
 var (
-	Upgrades = []upgrades.Upgrade{v401.Upgrade, v402.Upgrade}
+	Upgrades = []upgrades.Upgrade{v401.Upgrade, v421testnet.Upgrade}
 
 	// DefaultNodeHome default home directories for the application daemon
 	DefaultNodeHome string
diff --git a/app/upgrades/v4.2.0/constants.go b/app/upgrades/v4.2.1-testnet/constants.go
similarity index 86%
rename from app/upgrades/v4.2.0/constants.go
rename to app/upgrades/v4.2.1-testnet/constants.go
index fab9b5da9..2ba3d1f67 100644
--- a/app/upgrades/v4.2.0/constants.go
+++ b/app/upgrades/v4.2.1-testnet/constants.go
@@ -1,4 +1,4 @@
-package v400
+package v421testnet
 
 import (
 	storetypes "cosmossdk.io/store/types"
@@ -8,7 +8,7 @@ import (
 
 const (
 	// UpgradeName defines the on-chain upgrade name.
-	UpgradeName = "v4.2.0"
+	UpgradeName = "v4.2.1-testnet"
 )
 
 var Upgrade = upgrades.Upgrade{
diff --git a/app/upgrades/v4.2.0/upgrades.go b/app/upgrades/v4.2.1-testnet/upgrades.go
similarity index 99%
rename from app/upgrades/v4.2.0/upgrades.go
rename to app/upgrades/v4.2.1-testnet/upgrades.go
index 1f7ca0cec..419f03642 100644
--- a/app/upgrades/v4.2.0/upgrades.go
+++ b/app/upgrades/v4.2.1-testnet/upgrades.go
@@ -1,4 +1,4 @@
-package v400
+package v421testnet
 
 import (
 	"context"
diff --git a/app/upgrades/v4.2.0/upgrades_test.go b/app/upgrades/v4.2.1-testnet/upgrades_test.go
similarity index 97%
rename from app/upgrades/v4.2.0/upgrades_test.go
rename to app/upgrades/v4.2.1-testnet/upgrades_test.go
index 07deea0d0..ae21affe0 100644
--- a/app/upgrades/v4.2.0/upgrades_test.go
+++ b/app/upgrades/v4.2.1-testnet/upgrades_test.go
@@ -1,4 +1,4 @@
-package v400_test
+package v421testnet_test
 
 import (
 	"testing"
@@ -8,7 +8,7 @@ import (
 	sdkmath "cosmossdk.io/math"
 	upgradetypes "cosmossdk.io/x/upgrade/types"
 
-	v402 "github.com/neutron-org/neutron/v4/app/upgrades/v4.2.0"
+	v421testnet "github.com/neutron-org/neutron/v4/app/upgrades/v4.2.1-testnet"
 	"github.com/neutron-org/neutron/v4/testutil"
 	"github.com/neutron-org/neutron/v4/testutil/common/sample"
 	"github.com/neutron-org/neutron/v4/utils/math"
@@ -70,7 +70,7 @@ func (suite *UpgradeTestSuite) TestUnswappedTranche() {
 
 	// Run upgrade
 	upgrade := upgradetypes.Plan{
-		Name:   v402.UpgradeName,
+		Name:   v421testnet.UpgradeName,
 		Info:   "some text here",
 		Height: 100,
 	}
@@ -132,7 +132,7 @@ func (suite *UpgradeTestSuite) TestSwappedWithdrawnTranche() {
 
 	// Run Upgrade
 	upgrade := upgradetypes.Plan{
-		Name:   v402.UpgradeName,
+		Name:   v421testnet.UpgradeName,
 		Info:   "some text here",
 		Height: 100,
 	}
@@ -194,7 +194,7 @@ func (suite *UpgradeTestSuite) TestSwappedUnwithdrawnTranche() {
 
 	// Run Upgrade
 	upgrade := upgradetypes.Plan{
-		Name:   v402.UpgradeName,
+		Name:   v421testnet.UpgradeName,
 		Info:   "some text here",
 		Height: 100,
 	}
@@ -248,7 +248,7 @@ func (suite *UpgradeTestSuite) TestSwappedCanceledTranche() {
 
 	// Run Upgrade
 	upgrade := upgradetypes.Plan{
-		Name:   v402.UpgradeName,
+		Name:   v421testnet.UpgradeName,
 		Info:   "some text here",
 		Height: 100,
 	}
@@ -298,7 +298,7 @@ func (suite *UpgradeTestSuite) TestOrphanedTrancheUser() {
 
 	// Run Upgrade
 	upgrade := upgradetypes.Plan{
-		Name:   v402.UpgradeName,
+		Name:   v421testnet.UpgradeName,
 		Info:   "some text here",
 		Height: 100,
 	}