diff --git a/simd/cmd/root.go b/simd/cmd/root.go
index f46f0d6fa055..859c53dba360 100644
--- a/simd/cmd/root.go
+++ b/simd/cmd/root.go
@@ -34,6 +34,7 @@ import (
 	snapshottypes "github.com/cosmos/cosmos-sdk/store/snapshots/types"
 	simtestutil "github.com/cosmos/cosmos-sdk/testutil/sims"
 	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/types/mempool"
 	authcmd "github.com/cosmos/cosmos-sdk/x/auth/client/cli"
 	"github.com/cosmos/cosmos-sdk/x/auth/types"
 	banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
@@ -307,6 +308,7 @@ func newApp(
 		baseapp.SetSnapshot(snapshotStore, snapshotOptions),
 		baseapp.SetIAVLCacheSize(cast.ToInt(appOpts.Get(server.FlagIAVLCacheSize))),
 		baseapp.SetIAVLDisableFastNode(cast.ToBool(appOpts.Get(server.FlagDisableIAVLFastNode))),
+		baseapp.SetMempool(mempool.NewSenderNonceMempool(mempool.SenderNonceMaxTxOpt(cast.ToInt(appOpts.Get(server.FlagMempoolMaxTxs))))),
 	)
 }