diff --git a/app/app.go b/app/app.go
index 91f8204c5..87293d3f7 100644
--- a/app/app.go
+++ b/app/app.go
@@ -1198,7 +1198,7 @@ func New(
 	baseLane.WithOptions(opts...)
 
 	// set the block-sdk prepare / process-proposal handlers
-	blockSdkProposalHandler := blocksdkabci.NewProposalHandler(
+	blockSdkProposalHandler := blocksdkabci.NewDefaultProposalHandler(
 		app.Logger(),
 		app.GetTxConfig().TxDecoder(),
 		app.GetTxConfig().TxEncoder(),
@@ -1265,6 +1265,7 @@ func New(
 		mempool,
 		app.GetTxConfig().TxDecoder(),
 		app.BaseApp.CheckTx,
+		app.BaseApp,
 	)
 
 	app.SetCheckTx(parityCheckTx.CheckTx())
diff --git a/app/lane.go b/app/lane.go
index dc19fc27f..d29dfe72f 100644
--- a/app/lane.go
+++ b/app/lane.go
@@ -30,7 +30,6 @@ func (app *App) CreateLanes() *blocksdkbase.BaseLane {
 	baseLane := base_lane.NewDefaultLane(basecfg, blocksdkbase.DefaultMatchHandler())
 	baseLane.LaneMempool = blocksdkbase.NewMempool(
 		blocksdkbase.NewDefaultTxPriority(),
-		basecfg.TxEncoder,
 		basecfg.SignerExtractor,
 		basecfg.MaxTxs,
 	)
diff --git a/go.mod b/go.mod
index 7507c66e3..39471f5ef 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,7 @@
 module github.com/neutron-org/neutron/v4
 
-go 1.22.3
+go 1.22.4
+
 require (
 	cosmossdk.io/client/v2 v2.0.0-beta.1
 	cosmossdk.io/core v0.11.0