diff --git a/app/app.go b/app/app.go
index d1b9234..3d3cbc0 100644
--- a/app/app.go
+++ b/app/app.go
@@ -1011,6 +1011,7 @@ func (app *Astra) setupUpgradeHandlers() {
 		v31.CreateUpgradeHandler(
 			app.mm,
 			app.configurator,
+			app.StakingKeeper,
 		),
 	)
 }
diff --git a/app/upgrades/v3/upgrades.go b/app/upgrades/v3/upgrades.go
index 0525d06..04f40a6 100644
--- a/app/upgrades/v3/upgrades.go
+++ b/app/upgrades/v3/upgrades.go
@@ -1,6 +1,7 @@
 package v3
 
 import (
+	"github.com/AstraProtocol/astra/v3/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/types/module"
 	stakingkeeper "github.com/cosmos/cosmos-sdk/x/staking/keeper"
@@ -17,7 +18,10 @@ func CreateUpgradeHandler(
 	return func(ctx sdk.Context, _ upgradetypes.Plan, vm module.VersionMap) (module.VersionMap, error) {
 		logger := ctx.Logger().With("upgrade", UpgradeName)
 
-		setMinCommissionRate(ctx, stakingKeeper)
+		// !mainnet only
+		if !types.IsMainnet(ctx.ChainID()) {
+			setMinCommissionRate(ctx, stakingKeeper)
+		}
 
 		// Leave modules are as-is to avoid running InitGenesis.
 		logger.Debug("running module migrations ...")
diff --git a/app/upgrades/v3_1/upgrades.go b/app/upgrades/v3_1/upgrades.go
index 2e55eea..58eb87b 100644
--- a/app/upgrades/v3_1/upgrades.go
+++ b/app/upgrades/v3_1/upgrades.go
@@ -1,8 +1,11 @@
 package v31
 
 import (
+	"github.com/AstraProtocol/astra/v3/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/types/module"
+	stakingkeeper "github.com/cosmos/cosmos-sdk/x/staking/keeper"
+	stakingtypes "github.com/cosmos/cosmos-sdk/x/staking/types"
 	upgradetypes "github.com/cosmos/cosmos-sdk/x/upgrade/types"
 )
 
@@ -10,10 +13,15 @@ import (
 func CreateUpgradeHandler(
 	mm *module.Manager,
 	configurator module.Configurator,
+	stakingKeeper stakingkeeper.Keeper,
 ) upgradetypes.UpgradeHandler {
 	return func(ctx sdk.Context, _ upgradetypes.Plan, vm module.VersionMap) (module.VersionMap, error) {
 		logger := ctx.Logger().With("upgrade", UpgradeName)
 
+		// mainnet only
+		if types.IsMainnet(ctx.ChainID()) {
+			setMinCommissionRate(ctx, stakingKeeper)
+		}
 		// Refs:
 		// - https://docs.cosmos.network/master/building-modules/upgrade.html#registering-migrations
 		// - https://docs.cosmos.network/master/migrations/chain-upgrade-guide-044.html#chain-upgrade
@@ -23,3 +31,18 @@ func CreateUpgradeHandler(
 		return mm.RunMigrations(ctx, configurator, vm)
 	}
 }
+
+// setMinCommissionRate sets the minimum commission rate for validators
+// to 5%.
+func setMinCommissionRate(ctx sdk.Context, sk stakingkeeper.Keeper) {
+	stakingParams := stakingtypes.Params{
+		UnbondingTime:     sk.UnbondingTime(ctx),
+		MaxValidators:     sk.MaxValidators(ctx),
+		MaxEntries:        sk.MaxEntries(ctx),
+		HistoricalEntries: sk.HistoricalEntries(ctx),
+		BondDenom:         sk.BondDenom(ctx),
+		MinCommissionRate: sdk.NewDecWithPrec(5, 2), // 5%
+	}
+
+	sk.SetParams(ctx, stakingParams)
+}