diff --git a/app/app.go b/app/app.go
index a5951e99..4794c847 100644
--- a/app/app.go
+++ b/app/app.go
@@ -51,7 +51,7 @@ import (
 	"github.com/Nolus-Protocol/nolus-core/app/keepers"
 	appparams "github.com/Nolus-Protocol/nolus-core/app/params"
 	"github.com/Nolus-Protocol/nolus-core/app/upgrades"
-	v065 "github.com/Nolus-Protocol/nolus-core/app/upgrades/v065"
+	v066 "github.com/Nolus-Protocol/nolus-core/app/upgrades/v066"
 	"github.com/Nolus-Protocol/nolus-core/docs"
 
 	wasmkeeper "github.com/CosmWasm/wasmd/x/wasm/keeper"
@@ -67,7 +67,7 @@ const (
 var (
 	DefaultNodeHome string
 
-	Upgrades = []upgrades.Upgrade{v065.Upgrade}
+	Upgrades = []upgrades.Upgrade{v066.Upgrade}
 )
 
 var (
diff --git a/app/upgrades/v066/upgrades.go b/app/upgrades/v066/upgrades.go
index 8d314224..8ec76e63 100644
--- a/app/upgrades/v066/upgrades.go
+++ b/app/upgrades/v066/upgrades.go
@@ -32,8 +32,8 @@ func CreateUpgradeHandler(
 
 		// Properly register consensus params. In the process, change block max bytes params:
 		defaultConsensusParams := tmtypes.DefaultConsensusParams().ToProto()
-		defaultConsensusParams.Block.MaxBytes = 5000000 // previously 10485760
-		defaultConsensusParams.Block.MaxGas = 300000000 // previously 120000000
+		defaultConsensusParams.Block.MaxBytes = 4000000 // previously 22020096
+		defaultConsensusParams.Block.MaxGas = 100000000 // previously 100000000
 		err = keepers.ConsensusParamsKeeper.ParamsStore.Set(ctx, defaultConsensusParams)
 		if err != nil {
 			return nil, err