diff --git a/app/upgrades/v8/constants.go b/app/upgrades/v8/constants.go
index b8d932eb..814fcc70 100644
--- a/app/upgrades/v8/constants.go
+++ b/app/upgrades/v8/constants.go
@@ -77,3 +77,12 @@ func GetMigrateEscrowDenoms(chainID string) map[string]string {
 	result[pundixDenom] = fxtypes.PundixWrapDenom
 	return result
 }
+
+const mainnetPundiAIToken = "0x0000000000000000000000000000000000000000" // TODO update address
+
+func getMainnetBridgeToken(ctx sdk.Context) common.Address {
+	if ctx.ChainID() == fxtypes.MainnetChainId {
+		return common.HexToAddress(mainnetPundiAIToken)
+	}
+	panic("invalid chain id")
+}
diff --git a/app/upgrades/v8/erc20.go b/app/upgrades/v8/erc20.go
index ecd34176..caede4cc 100644
--- a/app/upgrades/v8/erc20.go
+++ b/app/upgrades/v8/erc20.go
@@ -47,3 +47,8 @@ func updateFXBridgeDenom(ctx sdk.Context, keeper erc20keeper.Keeper) error {
 	bridgeDenom := erc20types.NewBridgeDenom(ethtypes.ModuleName, bridgeToken.Contract)
 	return keeper.DenomIndex.Set(ctx, bridgeDenom, fxtypes.FXDenom)
 }
+
+func addMainnetPundiAIBridgeToken(ctx sdk.Context, keeper erc20keeper.Keeper) error {
+	pundiaiToken := getMainnetBridgeToken(ctx)
+	return keeper.AddBridgeToken(ctx, fxtypes.DefaultDenom, ethtypes.ModuleName, pundiaiToken.String(), false)
+}
diff --git a/app/upgrades/v8/upgrade.go b/app/upgrades/v8/upgrade.go
index f9cd7057..2d1362ee 100644
--- a/app/upgrades/v8/upgrade.go
+++ b/app/upgrades/v8/upgrade.go
@@ -110,6 +110,9 @@ func upgradeMainnet(
 	if err = mintPurseBridgeToken(ctx, app.Erc20Keeper, app.BankKeeper); err != nil {
 		return fromVM, err
 	}
+	if err = updateMainnetPundiAI(ctx, app); err != nil {
+		return fromVM, err
+	}
 	if err = updateContract(ctx, app); err != nil {
 		return fromVM, err
 	}
@@ -119,9 +122,6 @@ func upgradeMainnet(
 	if err = migrateModulesData(ctx, codec, app); err != nil {
 		return fromVM, err
 	}
-	if err = updateFXBridgeDenom(ctx, app.Erc20Keeper); err != nil {
-		return fromVM, err
-	}
 	return toVM, nil
 }
 
@@ -136,9 +136,6 @@ func migrateModulesData(ctx sdk.Context, codec codec.Codec, app *keepers.AppKeep
 	if err := migrateMetadataDisplay(ctx, app.BankKeeper); err != nil {
 		return err
 	}
-	if err := migrateErc20FXToPundiAI(ctx, app.Erc20Keeper); err != nil {
-		return err
-	}
 	if err := migrateMetadataFXToPundiAI(ctx, app.BankKeeper); err != nil {
 		return err
 	}
@@ -244,3 +241,13 @@ func fixPurseCoin(ctx sdk.Context, evmKeeper *fxevmkeeper.Keeper, erc20Keeper er
 	needIBCPurseSupply := sdk.NewCoin(ibcPurseToken.GetIbcDenom(), basePurseSupply.Amount.Sub(ibcPurseSupply.Amount))
 	return bankKeeper.MintCoins(ctx, crosschaintypes.ModuleName, sdk.NewCoins(needIBCPurseSupply))
 }
+
+func updateMainnetPundiAI(ctx sdk.Context, app *keepers.AppKeepers) error {
+	if err := migrateErc20FXToPundiAI(ctx, app.Erc20Keeper); err != nil {
+		return err
+	}
+	if err := updateFXBridgeDenom(ctx, app.Erc20Keeper); err != nil {
+		return err
+	}
+	return addMainnetPundiAIBridgeToken(ctx, app.Erc20Keeper)
+}