diff --git a/Makefile b/Makefile
index 367e69cca6..76b47e860a 100644
--- a/Makefile
+++ b/Makefile
@@ -223,11 +223,11 @@ TEST_TARGETS := test-unit test-unit-amino test-unit-proto test-ledger-mock test-
 # Test runs-specific rules. To add a new test target, just add
 # a new rule, customise ARGS or TEST_PACKAGES ad libitum, and
 # append the new rule to the TEST_TARGETS list.
-test-unit: ARGS=-tags='cgo ledger test_ledger_mock norace'
-test-unit-amino: ARGS=-tags='ledger test_ledger_mock test_amino norace'
-test-ledger: ARGS=-tags='cgo ledger norace'
-test-ledger-mock: ARGS=-tags='ledger test_ledger_mock norace'
-test-race: ARGS=-race -tags='cgo ledger test_ledger_mock'
+test-unit: ARGS=-tags='cgo ledger test_ledger_mock norace goleveldb'
+test-unit-amino: ARGS=-tags='ledger test_ledger_mock test_amino norace goleveldb'
+test-ledger: ARGS=-tags='cgo ledger norace goleveldb'
+test-ledger-mock: ARGS=-tags='ledger test_ledger_mock norace goleveldb'
+test-race: ARGS=-race -tags='cgo ledger test_ledger_mock goleveldb'
 test-race: TEST_PACKAGES=$(PACKAGES_NOSIMULATION)
 $(TEST_TARGETS): run-tests
 
diff --git a/baseapp/abci_test.go b/baseapp/abci_test.go
index 7ebd08bb69..f1dbc7569f 100644
--- a/baseapp/abci_test.go
+++ b/baseapp/abci_test.go
@@ -6,7 +6,7 @@ import (
 
 	abci "github.com/line/ostracon/abci/types"
 	ostprototypes "github.com/line/ostracon/proto/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/require"
 
 	sdk "github.com/line/lbm-sdk/v2/types"
@@ -14,7 +14,7 @@ import (
 
 func TestGetBlockRentionHeight(t *testing.T) {
 	logger := defaultLogger()
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	name := t.Name()
 
 	testCases := map[string]struct {
@@ -103,7 +103,7 @@ func TestGetBlockRentionHeight(t *testing.T) {
 	for name, tc := range testCases {
 		tc := tc
 
-		tc.bapp.SetParamStore(&paramStore{db: dbm.NewMemDB()})
+		tc.bapp.SetParamStore(&paramStore{db: memdb.NewDB()})
 		tc.bapp.InitChain(abci.RequestInitChain{
 			ConsensusParams: &abci.ConsensusParams{
 				Evidence: &ostprototypes.EvidenceParams{
@@ -124,7 +124,7 @@ func TestBaseAppCreateQueryContextRejectsNegativeHeights(t *testing.T) {
 	t.Parallel()
 
 	logger := defaultLogger()
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	name := t.Name()
 	app := NewBaseApp(name, logger, db, nil)
 
diff --git a/baseapp/baseapp.go b/baseapp/baseapp.go
index 17a715928b..1636cd663e 100644
--- a/baseapp/baseapp.go
+++ b/baseapp/baseapp.go
@@ -11,7 +11,7 @@ import (
 	"github.com/line/ostracon/crypto/tmhash"
 	"github.com/line/ostracon/libs/log"
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 
 	"github.com/line/lbm-sdk/v2/codec/types"
 	"github.com/line/lbm-sdk/v2/snapshots"
@@ -48,7 +48,7 @@ type BaseApp struct { // nolint: maligned
 	// initialized on creation
 	logger            log.Logger
 	name              string               // application name from abci.Info
-	db                dbm.DB               // common DB backend
+	db                tmdb.DB              // common DB backend
 	cms               sdk.CommitMultiStore // Main (uncached) state
 	storeLoader       StoreLoader          // function to handle store loading, may be overridden with SetStoreLoader()
 	router            sdk.Router           // handle any kind of message
@@ -136,7 +136,7 @@ type BaseApp struct { // nolint: maligned
 //
 // NOTE: The db is used to store the version number for now.
 func NewBaseApp(
-	name string, logger log.Logger, db dbm.DB, txDecoder sdk.TxDecoder, options ...func(*BaseApp),
+	name string, logger log.Logger, db tmdb.DB, txDecoder sdk.TxDecoder, options ...func(*BaseApp),
 ) *BaseApp {
 	app := &BaseApp{
 		logger:           logger,
diff --git a/baseapp/baseapp_test.go b/baseapp/baseapp_test.go
index 9ae71ca8a8..0648ca6f76 100644
--- a/baseapp/baseapp_test.go
+++ b/baseapp/baseapp_test.go
@@ -17,7 +17,8 @@ import (
 	abci "github.com/line/ostracon/abci/types"
 	"github.com/line/ostracon/libs/log"
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
@@ -38,7 +39,7 @@ var (
 )
 
 type paramStore struct {
-	db *dbm.MemDB
+	db *memdb.MemDB
 }
 
 func (ps *paramStore) Set(_ sdk.Context, key []byte, value interface{}) {
@@ -80,7 +81,7 @@ func defaultLogger() log.Logger {
 
 func newBaseApp(name string, options ...func(*BaseApp)) *BaseApp {
 	logger := defaultLogger()
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	codec := codec.NewLegacyAmino()
 	registerTestCodec(codec)
 	return NewBaseApp(name, logger, db, testTxDecoder(codec), options...)
@@ -112,7 +113,7 @@ func setupBaseApp(t *testing.T, options ...func(*BaseApp)) *BaseApp {
 	require.Equal(t, t.Name(), app.Name())
 
 	app.MountStores(capKey1, capKey2)
-	app.SetParamStore(&paramStore{db: dbm.NewMemDB()})
+	app.SetParamStore(&paramStore{db: memdb.NewDB()})
 
 	// stores are mounted
 	err := app.LoadLatestVersion()
@@ -136,7 +137,7 @@ func setupBaseAppWithSnapshots(t *testing.T, blocks uint, blockTxs int, options
 	snapshotTimeout := 1 * time.Minute
 	snapshotDir, err := ioutil.TempDir("", "baseapp")
 	require.NoError(t, err)
-	snapshotStore, err := snapshots.NewStore(dbm.NewMemDB(), snapshotDir)
+	snapshotStore, err := snapshots.NewStore(memdb.NewDB(), snapshotDir)
 	require.NoError(t, err)
 	teardown := func() {
 		os.RemoveAll(snapshotDir)
@@ -207,7 +208,7 @@ func TestMountStores(t *testing.T) {
 func TestLoadVersion(t *testing.T) {
 	logger := defaultLogger()
 	pruningOpt := SetPruning(store.PruneNothing)
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	name := t.Name()
 	app := NewBaseApp(name, logger, db, nil, pruningOpt)
 
@@ -257,7 +258,7 @@ func useDefaultLoader(app *BaseApp) {
 	app.SetStoreLoader(DefaultStoreLoader)
 }
 
-func initStore(t *testing.T, db dbm.DB, storeKey string, k, v []byte) {
+func initStore(t *testing.T, db tmdb.DB, storeKey string, k, v []byte) {
 	rs := rootmulti.NewStore(db)
 	rs.SetPruning(store.PruneNothing)
 	key := sdk.NewKVStoreKey(storeKey)
@@ -274,7 +275,7 @@ func initStore(t *testing.T, db dbm.DB, storeKey string, k, v []byte) {
 	require.Equal(t, int64(1), commitID.Version)
 }
 
-func checkStore(t *testing.T, db dbm.DB, ver int64, storeKey string, k, v []byte) {
+func checkStore(t *testing.T, db tmdb.DB, ver int64, storeKey string, k, v []byte) {
 	rs := rootmulti.NewStore(db)
 	rs.SetPruning(store.PruneDefault)
 	key := sdk.NewKVStoreKey(storeKey)
@@ -315,7 +316,7 @@ func TestSetLoader(t *testing.T) {
 		tc := tc
 		t.Run(name, func(t *testing.T) {
 			// prepare a db with some data
-			db := dbm.NewMemDB()
+			db := memdb.NewDB()
 			initStore(t, db, tc.origStoreKey, k, v)
 
 			// load the app with the existing db
@@ -343,7 +344,7 @@ func TestSetLoader(t *testing.T) {
 func TestAppVersionSetterGetter(t *testing.T) {
 	logger := defaultLogger()
 	pruningOpt := SetPruning(store.PruneDefault)
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	name := t.Name()
 	app := NewBaseApp(name, logger, db, nil, pruningOpt)
 
@@ -363,7 +364,7 @@ func TestAppVersionSetterGetter(t *testing.T) {
 func TestLoadVersionInvalid(t *testing.T) {
 	logger := log.NewNopLogger()
 	pruningOpt := SetPruning(store.PruneNothing)
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	name := t.Name()
 	app := NewBaseApp(name, logger, db, nil, pruningOpt)
 
@@ -400,7 +401,7 @@ func TestLoadVersionPruning(t *testing.T) {
 		Interval:   1,
 	}
 	pruningOpt := SetPruning(pruningOptions)
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	name := t.Name()
 	app := NewBaseApp(name, logger, db, nil, pruningOpt)
 
@@ -457,7 +458,7 @@ func testLoadVersionHelper(t *testing.T, app *BaseApp, expectedHeight int64, exp
 
 func TestOptionFunction(t *testing.T) {
 	logger := defaultLogger()
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	bap := NewBaseApp("starting name", logger, db, nil, testChangeNameHelper("new name"))
 	require.Equal(t, bap.name, "new name", "BaseApp should have had name changed via option function")
 }
@@ -554,7 +555,7 @@ func TestInitChainer(t *testing.T) {
 	name := t.Name()
 	// keep the db and logger ourselves so
 	// we can reload the same  app later
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	logger := defaultLogger()
 	app := NewBaseApp(name, logger, db, nil)
 	capKey := sdk.NewKVStoreKey("main")
@@ -633,7 +634,7 @@ func TestInitChainer(t *testing.T) {
 
 func TestInitChain_WithInitialHeight(t *testing.T) {
 	name := t.Name()
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	logger := defaultLogger()
 	app := NewBaseApp(name, logger, db, nil)
 
@@ -649,7 +650,7 @@ func TestInitChain_WithInitialHeight(t *testing.T) {
 
 func TestBeginBlock_WithInitialHeight(t *testing.T) {
 	name := t.Name()
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	logger := defaultLogger()
 	app := NewBaseApp(name, logger, db, nil)
 
@@ -902,7 +903,7 @@ func incrementingCounter(t *testing.T, store sdk.KVStore, counterKey []byte, cou
 	return &sdk.Result{}, nil
 }
 
-//---------------------------------------------------------------------
+// ---------------------------------------------------------------------
 // Tx processing - CheckTx, DeliverTx, SimulateTx.
 // These tests use the serialized tx as input, while most others will use the
 // Check(), Deliver(), Simulate() methods directly.
@@ -2005,7 +2006,7 @@ func TestWithRouter(t *testing.T) {
 }
 
 func TestBaseApp_EndBlock(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	name := t.Name()
 	logger := defaultLogger()
 
@@ -2016,7 +2017,7 @@ func TestBaseApp_EndBlock(t *testing.T) {
 	}
 
 	app := NewBaseApp(name, logger, db, nil)
-	app.SetParamStore(&paramStore{db: dbm.NewMemDB()})
+	app.SetParamStore(&paramStore{db: memdb.NewDB()})
 	app.InitChain(abci.RequestInitChain{
 		ConsensusParams: cp,
 	})
diff --git a/baseapp/grpcrouter_test.go b/baseapp/grpcrouter_test.go
index 70a28cce63..8c71b8a923 100644
--- a/baseapp/grpcrouter_test.go
+++ b/baseapp/grpcrouter_test.go
@@ -6,7 +6,7 @@ import (
 	"testing"
 
 	"github.com/line/ostracon/libs/log"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/require"
 
 	"github.com/line/lbm-sdk/v2/baseapp"
@@ -52,7 +52,7 @@ func TestGRPCGatewayRouter(t *testing.T) {
 
 func TestRegisterQueryServiceTwice(t *testing.T) {
 	// Setup baseapp.
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	encCfg := simapp.MakeTestEncodingConfig()
 	app := baseapp.NewBaseApp("test", log.NewTMLogger(log.NewSyncWriter(os.Stdout)), db, encCfg.TxConfig.TxDecoder())
 	app.SetInterfaceRegistry(encCfg.InterfaceRegistry)
diff --git a/baseapp/msg_service_router_test.go b/baseapp/msg_service_router_test.go
index b67d5e97bc..6fe4e068bb 100644
--- a/baseapp/msg_service_router_test.go
+++ b/baseapp/msg_service_router_test.go
@@ -7,7 +7,7 @@ import (
 	abci "github.com/line/ostracon/abci/types"
 	"github.com/line/ostracon/libs/log"
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/require"
 
 	"github.com/line/lbm-sdk/v2/baseapp"
@@ -19,7 +19,7 @@ import (
 )
 
 func TestRegisterMsgService(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 
 	// Create an encoding config that doesn't register testdata Msg services.
 	encCfg := simapp.MakeTestEncodingConfig()
@@ -44,7 +44,7 @@ func TestRegisterMsgService(t *testing.T) {
 
 func TestRegisterMsgServiceTwice(t *testing.T) {
 	// Setup baseapp.
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	encCfg := simapp.MakeTestEncodingConfig()
 	app := baseapp.NewBaseApp("test", log.NewTMLogger(log.NewSyncWriter(os.Stdout)), db, encCfg.TxConfig.TxDecoder())
 	app.SetInterfaceRegistry(encCfg.InterfaceRegistry)
@@ -71,7 +71,7 @@ func TestMsgService(t *testing.T) {
 	priv, _, _ := testdata.KeyTestPubAddr()
 	encCfg := simapp.MakeTestEncodingConfig()
 	testdata.RegisterInterfaces(encCfg.InterfaceRegistry)
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	app := baseapp.NewBaseApp("test", log.NewTMLogger(log.NewSyncWriter(os.Stdout)), db, encCfg.TxConfig.TxDecoder())
 	app.SetInterfaceRegistry(encCfg.InterfaceRegistry)
 	testdata.RegisterMsgServer(
diff --git a/baseapp/options.go b/baseapp/options.go
index 5c2dfd8d41..120462b37d 100644
--- a/baseapp/options.go
+++ b/baseapp/options.go
@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"io"
 
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 
 	"github.com/line/lbm-sdk/v2/codec/types"
 	"github.com/line/lbm-sdk/v2/snapshots"
@@ -104,7 +104,7 @@ func (app *BaseApp) SetAppVersion(v string) {
 	app.appVersion = v
 }
 
-func (app *BaseApp) SetDB(db dbm.DB) {
+func (app *BaseApp) SetDB(db tmdb.DB) {
 	if app.sealed {
 		panic("SetDB() on sealed BaseApp")
 	}
diff --git a/crypto/keyring/legacy.go b/crypto/keyring/legacy.go
index 476b7e8709..a20e7191b9 100644
--- a/crypto/keyring/legacy.go
+++ b/crypto/keyring/legacy.go
@@ -6,7 +6,7 @@ import (
 	"strings"
 
 	ostos "github.com/line/ostracon/libs/os"
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 	"github.com/pkg/errors"
 
 	"github.com/line/lbm-sdk/v2/crypto"
@@ -45,12 +45,12 @@ var _ LegacyKeybase = dbKeybase{}
 //
 // NOTE: dbKeybase will be deprecated in favor of keyringKeybase.
 type dbKeybase struct {
-	db dbm.DB
+	db tmdb.DB
 }
 
 // newDBKeybase creates a new dbKeybase instance using the provided DB for
 // reading and writing keys.
-func newDBKeybase(db dbm.DB) dbKeybase {
+func newDBKeybase(db tmdb.DB) dbKeybase {
 	return dbKeybase{
 		db: db,
 	}
diff --git a/go.mod b/go.mod
index c1ae333e67..46ee491201 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,6 @@ module github.com/line/lbm-sdk/v2
 
 require (
 	github.com/99designs/keyring v1.1.6
-	github.com/DataDog/zstd v1.4.5 // indirect
 	github.com/armon/go-metrics v0.3.6
 	github.com/bgentry/speakeasy v0.1.0
 	github.com/btcsuite/btcd v0.21.0-beta
@@ -12,22 +11,19 @@ require (
 	github.com/confio/ics23/go v0.6.3
 	github.com/cosmos/go-bip39 v1.0.0
 	github.com/cosmos/ledger-cosmos-go v0.11.1
-	github.com/dgraph-io/ristretto v0.0.3 // indirect
-	github.com/dgryski/go-farm v0.0.0-20200201041132-a6ae2369ad13 // indirect
 	github.com/enigmampc/btcutil v1.0.3-0.20200723161021-e2fb6adb2a25
 	github.com/gogo/gateway v1.1.0
 	github.com/gogo/protobuf v1.3.3
 	github.com/golang/mock v1.4.4
 	github.com/golang/protobuf v1.4.3
-	github.com/golang/snappy v0.0.2 // indirect
 	github.com/gorilla/handlers v1.5.1
 	github.com/gorilla/mux v1.8.0
 	github.com/grpc-ecosystem/go-grpc-middleware v1.2.2
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0
 	github.com/hashicorp/golang-lru v0.5.4
-	github.com/line/iavl/v2 v2.0.0-init.1
-	github.com/line/ostracon v0.34.9-0.20210316071456-5fea666cc7ce
-	github.com/line/tm-db/v2 v2.0.0-init.1
+	github.com/line/iavl/v2 v2.0.0-init.1.0.20210325055816-6304f1fd2f09
+	github.com/line/ostracon v0.34.9-0.20210325081149-c7c246b1be58
+	github.com/line/tm-db/v2 v2.0.0-init.1.0.20210325025547-0ea105c02281
 	github.com/magiconair/properties v1.8.4
 	github.com/mattn/go-isatty v0.0.12
 	github.com/otiai10/copy v1.4.2
diff --git a/go.sum b/go.sum
index 505e7c7ce5..1294d1a899 100644
--- a/go.sum
+++ b/go.sum
@@ -18,9 +18,8 @@ github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym
 github.com/ChainSafe/go-schnorrkel v0.0.0-20200405005733-88cbf1b4c40d h1:nalkkPQcITbvhmL4+C4cKA87NW0tfm3Kl9VXRoPywFg=
 github.com/ChainSafe/go-schnorrkel v0.0.0-20200405005733-88cbf1b4c40d/go.mod h1:URdX5+vg25ts3aCh8H5IFZybJYKWhJHYMTnf+ULtoC4=
 github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
+github.com/DataDog/zstd v1.4.1 h1:3oxKN3wbHibqx897utPC2LTQU4J+IHWWJO+glkAkpFM=
 github.com/DataDog/zstd v1.4.1/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
-github.com/DataDog/zstd v1.4.5 h1:EndNeuB0l9syBZhut0wns3gV1hL8zX8LIu6ZiVHWLIQ=
-github.com/DataDog/zstd v1.4.5/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
 github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
 github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
@@ -123,13 +122,11 @@ github.com/decred/dcrd/lru v1.0.0/go.mod h1:mxKOwFd7lFjN2GZYsiz/ecgqR6kkYAl+0pz0
 github.com/dgraph-io/badger/v2 v2.2007.1/go.mod h1:26P/7fbL4kUZVEVKLAKXkBXKOydDmM2p1e+NhhnBCAE=
 github.com/dgraph-io/badger/v2 v2.2007.2 h1:EjjK0KqwaFMlPin1ajhP943VPENHJdEz1KLIegjaI3k=
 github.com/dgraph-io/badger/v2 v2.2007.2/go.mod h1:26P/7fbL4kUZVEVKLAKXkBXKOydDmM2p1e+NhhnBCAE=
+github.com/dgraph-io/ristretto v0.0.3-0.20200630154024-f66de99634de h1:t0UHb5vdojIDUqktM6+xJAfScFBsVpXZmqC9dsgJmeA=
 github.com/dgraph-io/ristretto v0.0.3-0.20200630154024-f66de99634de/go.mod h1:KPxhHT9ZxKefz+PCeOGsrHpl1qZ7i70dGTu2u+Ahh6E=
-github.com/dgraph-io/ristretto v0.0.3 h1:jh22xisGBjrEVnRZ1DVTpBVQm0Xndu8sMl0CWDzSIBI=
-github.com/dgraph-io/ristretto v0.0.3/go.mod h1:KPxhHT9ZxKefz+PCeOGsrHpl1qZ7i70dGTu2u+Ahh6E=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
+github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2 h1:tdlZCpZ/P9DhczCTSixgIKmwPv6+wP5DGjqLYw5SUiA=
 github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
-github.com/dgryski/go-farm v0.0.0-20200201041132-a6ae2369ad13 h1:fAjc9m62+UWV/WAFKLNi6ZS0675eEUC9y3AlwSbQu1Y=
-github.com/dgryski/go-farm v0.0.0-20200201041132-a6ae2369ad13/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
 github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
 github.com/dustin/go-humanize v0.0.0-20171111073723-bb3d318650d4/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
@@ -202,9 +199,8 @@ github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw
 github.com/golang/protobuf v1.4.3 h1:JjCZWpVbqXDqFVmTfYWEVTMIYrL/NPdPSCHPJ0T/raM=
 github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/golang/snappy v0.0.1 h1:Qgr9rKW7uDUkrbSmQeiDsGa8SjGyCOGtuasMWwvp2P4=
 github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
-github.com/golang/snappy v0.0.2 h1:aeE13tS0IiQgFjYdoL8qN3K1N2bXXtI6Vi51/y7BpMw=
-github.com/golang/snappy v0.0.2/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/btree v1.0.0 h1:0udJVsspx3VBr5FwtLhQQtuAsVc79tTq0ocGIPAU6qo=
 github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
@@ -320,6 +316,7 @@ github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxv
 github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/fs v0.1.0/go.mod h1:FFnZGqtBN9Gxj7eW1uZ42v5BccTP0vu6NEaFoC2HwRg=
 github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
+github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
@@ -328,13 +325,13 @@ github.com/libp2p/go-buffer-pool v0.0.2 h1:QNK2iAFa8gjAe1SPz6mHSMuCcjs+X1wlHzeOS
 github.com/libp2p/go-buffer-pool v0.0.2/go.mod h1:MvaB6xw5vOrDl8rYZGLFdKAuk/hRoRZd1Vi32+RXyFM=
 github.com/lightstep/lightstep-tracer-common/golang/gogo v0.0.0-20190605223551-bc2310a04743/go.mod h1:qklhhLq1aX+mtWk9cPHPzaBjWImj5ULL6C7HFJtXQMM=
 github.com/lightstep/lightstep-tracer-go v0.18.1/go.mod h1:jlF1pusYV4pidLvZ+XD0UBX0ZE6WURAspgAczcDHrL4=
-github.com/line/iavl/v2 v2.0.0-init.1 h1:Qn+57tRRRlCsyMsgZs9YcoLlPPBi6QMVMhEwjHubCVk=
-github.com/line/iavl/v2 v2.0.0-init.1/go.mod h1:isewgbbDSuyhB67oiOoX9ide3AOug2Y35gFqZaHI3L4=
+github.com/line/iavl/v2 v2.0.0-init.1.0.20210325055816-6304f1fd2f09 h1:11L4wU4iYYRfOP20qo7909Q0gkd1NG8GOjSPu3Bblcg=
+github.com/line/iavl/v2 v2.0.0-init.1.0.20210325055816-6304f1fd2f09/go.mod h1:lOUXCMWnB9G5wDfungP5nhnHAFgVBwB0/iqFhH44OIs=
 github.com/line/ostracon v0.34.9-0.20210315041958-2a1f43c788f5/go.mod h1:1THU+kF+6fxLaNYQKcdNyLCO6t9LnqSMaExDMiLozbM=
-github.com/line/ostracon v0.34.9-0.20210316071456-5fea666cc7ce h1:NLEQisrrFLOHCTfY6oFARnPWO2avqPmmas8lTfgMLCc=
-github.com/line/ostracon v0.34.9-0.20210316071456-5fea666cc7ce/go.mod h1:PthHRpDto0bepI2qpZdTSNIx50Jr7HOiecKGyIxm09s=
-github.com/line/tm-db/v2 v2.0.0-init.1 h1:oYM+IJk1GuxDx/OPhCbyvGLnpyQYa7dWg1IDjTOqdjQ=
-github.com/line/tm-db/v2 v2.0.0-init.1/go.mod h1:TiTwPFffNAqep0nV0YWaxPjElbCp6yG4K8SCxy69mE4=
+github.com/line/ostracon v0.34.9-0.20210325081149-c7c246b1be58 h1:k+/hsrZ1RFIlL9+PRDzKPY+5YKFDWklReIgbeYmt+c4=
+github.com/line/ostracon v0.34.9-0.20210325081149-c7c246b1be58/go.mod h1:JQ5id/iSwal6/BAoN119QEzfTKm90DNPqB1mPiCR8Jk=
+github.com/line/tm-db/v2 v2.0.0-init.1.0.20210325025547-0ea105c02281 h1:HwehzGvsgPHND01825UbjjiKgwfbqIYFAnvn6OheLQs=
+github.com/line/tm-db/v2 v2.0.0-init.1.0.20210325025547-0ea105c02281/go.mod h1:TiTwPFffNAqep0nV0YWaxPjElbCp6yG4K8SCxy69mE4=
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
 github.com/magiconair/properties v1.8.1/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
 github.com/magiconair/properties v1.8.4 h1:8KGKTcQQGm0Kv7vEbKFErAoAOFyyacLStRtQSeYtvkY=
@@ -803,6 +800,7 @@ google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlba
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b h1:QRR6H1YWRnHb4Y/HeNFCTJLFVxaq6wH4YuVdsUOr75U=
diff --git a/server/export_test.go b/server/export_test.go
index 512a40a0e9..06553cc3ad 100644
--- a/server/export_test.go
+++ b/server/export_test.go
@@ -18,7 +18,8 @@ import (
 	"github.com/line/ostracon/libs/log"
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
 	osttypes "github.com/line/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 
 	"github.com/line/lbm-sdk/v2/client"
 	"github.com/line/lbm-sdk/v2/client/flags"
@@ -128,7 +129,7 @@ func setupApp(t *testing.T, tempDir string) (*simapp.SimApp, context.Context, *o
 	}
 
 	logger := log.NewTMLogger(log.NewSyncWriter(os.Stdout))
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	encCfg := simapp.MakeTestEncodingConfig()
 	app := simapp.NewSimApp(logger, db, nil, true, map[int64]bool{}, tempDir, 0, encCfg, simapp.EmptyAppOptions{})
 
@@ -149,7 +150,7 @@ func setupApp(t *testing.T, tempDir string) (*simapp.SimApp, context.Context, *o
 	app.Commit()
 
 	cmd := server.ExportCmd(
-		func(_ log.Logger, _ dbm.DB, _ io.Writer, height int64, forZeroHeight bool, jailAllowedAddrs []string, appOptons types.AppOptions) (types.ExportedApp, error) {
+		func(_ log.Logger, _ tmdb.DB, _ io.Writer, height int64, forZeroHeight bool, jailAllowedAddrs []string, appOptons types.AppOptions) (types.ExportedApp, error) {
 			encCfg := simapp.MakeTestEncodingConfig()
 
 			var simApp *simapp.SimApp
diff --git a/server/mock/store.go b/server/mock/store.go
index 3cd830d2bd..c0dc254c97 100644
--- a/server/mock/store.go
+++ b/server/mock/store.go
@@ -3,7 +3,7 @@ package mock
 import (
 	"io"
 
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 
 	store "github.com/line/lbm-sdk/v2/store/types"
 	sdk "github.com/line/lbm-sdk/v2/types"
@@ -67,7 +67,7 @@ func (ms multiStore) GetCommitStore(key sdk.StoreKey) sdk.CommitStore {
 	panic("not implemented")
 }
 
-func (ms multiStore) MountStoreWithDB(key sdk.StoreKey, typ sdk.StoreType, db dbm.DB) {
+func (ms multiStore) MountStoreWithDB(key sdk.StoreKey, typ sdk.StoreType, db tmdb.DB) {
 	ms.kv[key] = kvStore{store: make(map[string][]byte)}
 }
 
diff --git a/server/mock/store_test.go b/server/mock/store_test.go
index 9e2f3079b5..7111233bf8 100644
--- a/server/mock/store_test.go
+++ b/server/mock/store_test.go
@@ -5,13 +5,13 @@ import (
 
 	"github.com/stretchr/testify/require"
 
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 
 	sdk "github.com/line/lbm-sdk/v2/types"
 )
 
 func TestStore(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	cms := NewCommitMultiStore()
 
 	key := sdk.NewKVStoreKey("test")
diff --git a/server/types/app.go b/server/types/app.go
index b8d2831242..98f23e9242 100644
--- a/server/types/app.go
+++ b/server/types/app.go
@@ -8,7 +8,7 @@ import (
 	abci "github.com/line/ostracon/abci/types"
 	"github.com/line/ostracon/libs/log"
 	osttypes "github.com/line/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 	"github.com/spf13/cobra"
 
 	"github.com/line/lbm-sdk/v2/client"
@@ -50,7 +50,7 @@ type (
 
 	// AppCreator is a function that allows us to lazily initialize an
 	// application using various configurations.
-	AppCreator func(log.Logger, dbm.DB, io.Writer, AppOptions) Application
+	AppCreator func(log.Logger, tmdb.DB, io.Writer, AppOptions) Application
 
 	// ModuleInitFlags takes a start command and adds modules specific init flags.
 	ModuleInitFlags func(startCmd *cobra.Command)
@@ -70,5 +70,5 @@ type (
 
 	// AppExporter is a function that dumps all app state to
 	// JSON-serializable structure and returns the current validator set.
-	AppExporter func(log.Logger, dbm.DB, io.Writer, int64, bool, []string, AppOptions) (ExportedApp, error)
+	AppExporter func(log.Logger, tmdb.DB, io.Writer, int64, bool, []string, AppOptions) (ExportedApp, error)
 )
diff --git a/server/util.go b/server/util.go
index 950ee402b2..1b040b6311 100644
--- a/server/util.go
+++ b/server/util.go
@@ -16,7 +16,7 @@ import (
 
 	ostcfg "github.com/line/ostracon/config"
 	ostlog "github.com/line/ostracon/libs/log"
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
 	"github.com/spf13/cobra"
@@ -360,7 +360,7 @@ func addrToIP(addr net.Addr) net.IP {
 	return ip
 }
 
-func openDB(rootDir string) (dbm.DB, error) {
+func openDB(rootDir string) (tmdb.DB, error) {
 	dataDir := filepath.Join(rootDir, "data")
 	return sdk.NewLevelDB("application", dataDir)
 }
diff --git a/simapp/app.go b/simapp/app.go
index aa9656ec73..e13779f402 100644
--- a/simapp/app.go
+++ b/simapp/app.go
@@ -12,7 +12,7 @@ import (
 	"github.com/line/ostracon/libs/log"
 	ostos "github.com/line/ostracon/libs/os"
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 	"github.com/rakyll/statik/fs"
 	"github.com/spf13/cast"
 
@@ -193,7 +193,7 @@ func init() {
 
 // NewSimApp returns a reference to an initialized SimApp.
 func NewSimApp(
-	logger log.Logger, db dbm.DB, traceStore io.Writer, loadLatest bool, skipUpgradeHeights map[int64]bool,
+	logger log.Logger, db tmdb.DB, traceStore io.Writer, loadLatest bool, skipUpgradeHeights map[int64]bool,
 	homePath string, invCheckPeriod uint, encodingConfig simappparams.EncodingConfig,
 	appOpts servertypes.AppOptions, baseAppOptions ...func(*baseapp.BaseApp),
 ) *SimApp {
diff --git a/simapp/app_test.go b/simapp/app_test.go
index d5d658900c..fcf7ec15b5 100644
--- a/simapp/app_test.go
+++ b/simapp/app_test.go
@@ -6,7 +6,7 @@ import (
 	"testing"
 
 	"github.com/line/ostracon/libs/log"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/require"
 
 	abci "github.com/line/ostracon/abci/types"
@@ -14,7 +14,7 @@ import (
 
 func TestSimAppExportAndBlockedAddrs(t *testing.T) {
 	encCfg := MakeTestEncodingConfig()
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	app := NewSimApp(log.NewTMLogger(log.NewSyncWriter(os.Stdout)), db, nil, true, map[int64]bool{}, DefaultNodeHome, 0, encCfg, EmptyAppOptions{})
 
 	for acc := range maccPerms {
diff --git a/simapp/sim_test.go b/simapp/sim_test.go
index 0aa111b16d..3625717fc9 100644
--- a/simapp/sim_test.go
+++ b/simapp/sim_test.go
@@ -10,7 +10,7 @@ import (
 	abci "github.com/line/ostracon/abci/types"
 	"github.com/line/ostracon/libs/log"
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/require"
 
 	"github.com/line/lbm-sdk/v2/baseapp"
@@ -298,7 +298,7 @@ func TestAppStateDeterminism(t *testing.T) {
 				logger = log.NewNopLogger()
 			}
 
-			db := dbm.NewMemDB()
+			db := memdb.NewDB()
 			app := NewSimApp(logger, db, nil, true, map[int64]bool{}, DefaultNodeHome, FlagPeriodValue, MakeTestEncodingConfig(), EmptyAppOptions{}, interBlockCacheOpt())
 
 			fmt.Printf(
diff --git a/simapp/simd/cmd/root.go b/simapp/simd/cmd/root.go
index 4ab54e1e09..d15cc40d29 100644
--- a/simapp/simd/cmd/root.go
+++ b/simapp/simd/cmd/root.go
@@ -8,7 +8,7 @@ import (
 
 	ostcli "github.com/line/ostracon/libs/cli"
 	"github.com/line/ostracon/libs/log"
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 	"github.com/spf13/cast"
 	"github.com/spf13/cobra"
 
@@ -154,7 +154,7 @@ type appCreator struct {
 }
 
 // newApp is an AppCreator
-func (a appCreator) newApp(logger log.Logger, db dbm.DB, traceStore io.Writer, appOpts servertypes.AppOptions) servertypes.Application {
+func (a appCreator) newApp(logger log.Logger, db tmdb.DB, traceStore io.Writer, appOpts servertypes.AppOptions) servertypes.Application {
 	var cache sdk.MultiStorePersistentCache
 
 	if cast.ToBool(appOpts.Get(server.FlagInterBlockCache)) {
@@ -204,7 +204,7 @@ func (a appCreator) newApp(logger log.Logger, db dbm.DB, traceStore io.Writer, a
 // appExport creates a new simapp (optionally at a given height)
 // and exports state.
 func (a appCreator) appExport(
-	logger log.Logger, db dbm.DB, traceStore io.Writer, height int64, forZeroHeight bool, jailAllowedAddrs []string,
+	logger log.Logger, db tmdb.DB, traceStore io.Writer, height int64, forZeroHeight bool, jailAllowedAddrs []string,
 	appOpts servertypes.AppOptions) (servertypes.ExportedApp, error) {
 
 	var simApp *simapp.SimApp
diff --git a/simapp/test_helpers.go b/simapp/test_helpers.go
index ce6a844c78..720f49e08e 100644
--- a/simapp/test_helpers.go
+++ b/simapp/test_helpers.go
@@ -13,7 +13,7 @@ import (
 	"github.com/line/ostracon/libs/log"
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
 	osttypes "github.com/line/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/require"
 
 	bam "github.com/line/lbm-sdk/v2/baseapp"
@@ -50,7 +50,7 @@ var DefaultConsensusParams = &abci.ConsensusParams{
 }
 
 func setup(withGenesis bool, invCheckPeriod uint) (*SimApp, GenesisState) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	encCdc := MakeTestEncodingConfig()
 	app := NewSimApp(log.NewNopLogger(), db, nil, true, map[int64]bool{}, DefaultNodeHome, invCheckPeriod, encCdc, EmptyAppOptions{})
 	if withGenesis {
diff --git a/simapp/utils.go b/simapp/utils.go
index b9e312f124..7cdea9c235 100644
--- a/simapp/utils.go
+++ b/simapp/utils.go
@@ -6,7 +6,7 @@ import (
 	"io/ioutil"
 
 	"github.com/line/ostracon/libs/log"
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 
 	"github.com/line/lbm-sdk/v2/codec"
 	"github.com/line/lbm-sdk/v2/simapp/helpers"
@@ -19,7 +19,7 @@ import (
 // SetupSimulation creates the config, db (levelDB), temporary directory and logger for
 // the simulation tests. If `FlagEnabledValue` is false it skips the current test.
 // Returns error on an invalid db intantiation or temp dir creation.
-func SetupSimulation(dirPrefix, dbName string) (simtypes.Config, dbm.DB, string, log.Logger, bool, error) {
+func SetupSimulation(dirPrefix, dbName string) (simtypes.Config, tmdb.DB, string, log.Logger, bool, error) {
 	if !FlagEnabledValue {
 		return simtypes.Config{}, nil, "", nil, true, nil
 	}
@@ -104,7 +104,7 @@ func CheckExportSimulation(
 }
 
 // PrintStats prints the corresponding statistics from the app DB.
-func PrintStats(db dbm.DB) {
+func PrintStats(db tmdb.DB) {
 	fmt.Println("\nLevelDB Stats")
 	fmt.Println(db.Stats()["leveldb.stats"])
 	fmt.Println("LevelDB cached block size", db.Stats()["leveldb.cachedblock"])
diff --git a/snapshots/helpers_test.go b/snapshots/helpers_test.go
index 1c973d3958..22f7ddb46c 100644
--- a/snapshots/helpers_test.go
+++ b/snapshots/helpers_test.go
@@ -10,9 +10,10 @@ import (
 	"testing"
 	"time"
 
-	db "github.com/line/tm-db/v2"
 	"github.com/stretchr/testify/require"
 
+	"github.com/line/tm-db/v2/memdb"
+
 	"github.com/line/lbm-sdk/v2/snapshots"
 	"github.com/line/lbm-sdk/v2/snapshots/types"
 )
@@ -105,7 +106,7 @@ func setupBusyManager(t *testing.T) *snapshots.Manager {
 	require.NoError(t, err)
 	t.Cleanup(func() { _ = os.RemoveAll(tempdir) })
 
-	store, err := snapshots.NewStore(db.NewMemDB(), tempdir)
+	store, err := snapshots.NewStore(memdb.NewDB(), tempdir)
 	require.NoError(t, err)
 	hung := newHungSnapshotter()
 	mgr := snapshots.NewManager(store, hung)
diff --git a/snapshots/store.go b/snapshots/store.go
index 96cd95749f..382a8f2bb8 100644
--- a/snapshots/store.go
+++ b/snapshots/store.go
@@ -11,7 +11,7 @@ import (
 	"sync"
 
 	"github.com/gogo/protobuf/proto"
-	db "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 
 	"github.com/line/lbm-sdk/v2/snapshots/types"
 	sdkerrors "github.com/line/lbm-sdk/v2/types/errors"
@@ -24,7 +24,7 @@ const (
 
 // Store is a snapshot store, containing snapshot metadata and binary chunks.
 type Store struct {
-	db  db.DB
+	db  tmdb.DB
 	dir string
 
 	mtx    sync.Mutex
@@ -32,7 +32,7 @@ type Store struct {
 }
 
 // NewStore creates a new snapshot store.
-func NewStore(db db.DB, dir string) (*Store, error) {
+func NewStore(db tmdb.DB, dir string) (*Store, error) {
 	if dir == "" {
 		return nil, sdkerrors.Wrap(sdkerrors.ErrLogic, "snapshot directory not given")
 	}
diff --git a/snapshots/store_test.go b/snapshots/store_test.go
index 10ca90da5e..77932d1d54 100644
--- a/snapshots/store_test.go
+++ b/snapshots/store_test.go
@@ -10,10 +10,11 @@ import (
 	"testing"
 	"time"
 
-	db "github.com/line/tm-db/v2"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
+	"github.com/line/tm-db/v2/memdb"
+
 	"github.com/line/lbm-sdk/v2/snapshots"
 	"github.com/line/lbm-sdk/v2/snapshots/types"
 	"github.com/line/lbm-sdk/v2/testutil"
@@ -24,7 +25,7 @@ func setupStore(t *testing.T) *snapshots.Store {
 	require.NoError(t, err)
 	t.Cleanup(func() { _ = os.RemoveAll(tempdir) })
 
-	store, err := snapshots.NewStore(db.NewMemDB(), tempdir)
+	store, err := snapshots.NewStore(memdb.NewDB(), tempdir)
 	require.NoError(t, err)
 
 	_, err = store.Save(1, 1, makeChunks([][]byte{
@@ -49,20 +50,20 @@ func setupStore(t *testing.T) *snapshots.Store {
 
 func TestNewStore(t *testing.T) {
 	tempdir := t.TempDir()
-	_, err := snapshots.NewStore(db.NewMemDB(), tempdir)
+	_, err := snapshots.NewStore(memdb.NewDB(), tempdir)
 
 	require.NoError(t, err)
 }
 
 func TestNewStore_ErrNoDir(t *testing.T) {
-	_, err := snapshots.NewStore(db.NewMemDB(), "")
+	_, err := snapshots.NewStore(memdb.NewDB(), "")
 	require.Error(t, err)
 }
 
 func TestNewStore_ErrDirFailure(t *testing.T) {
 	notADir := filepath.Join(testutil.TempFile(t).Name(), "subdir")
 
-	_, err := snapshots.NewStore(db.NewMemDB(), notADir)
+	_, err := snapshots.NewStore(memdb.NewDB(), notADir)
 	require.Error(t, err)
 }
 
diff --git a/store/cache/cache_test.go b/store/cache/cache_test.go
index 0aa923310f..934f0aae52 100644
--- a/store/cache/cache_test.go
+++ b/store/cache/cache_test.go
@@ -4,17 +4,18 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/line/iavl/v2"
-	dbm "github.com/line/tm-db/v2"
 	"github.com/stretchr/testify/require"
 
+	"github.com/line/iavl/v2"
+	"github.com/line/tm-db/v2/memdb"
+
 	"github.com/line/lbm-sdk/v2/store/cache"
 	iavlstore "github.com/line/lbm-sdk/v2/store/iavl"
 	"github.com/line/lbm-sdk/v2/store/types"
 )
 
 func TestGetOrSetStoreCache(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	mngr := cache.NewCommitKVStoreCacheManager(cache.DefaultCommitKVStoreCacheSize)
 
 	sKey := types.NewKVStoreKey("test")
@@ -28,7 +29,7 @@ func TestGetOrSetStoreCache(t *testing.T) {
 }
 
 func TestUnwrap(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	mngr := cache.NewCommitKVStoreCacheManager(cache.DefaultCommitKVStoreCacheSize)
 
 	sKey := types.NewKVStoreKey("test")
@@ -42,7 +43,7 @@ func TestUnwrap(t *testing.T) {
 }
 
 func TestStoreCache(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	mngr := cache.NewCommitKVStoreCacheManager(cache.DefaultCommitKVStoreCacheSize)
 
 	sKey := types.NewKVStoreKey("test")
diff --git a/store/cachekv/memiterator.go b/store/cachekv/memiterator.go
index 953dfce582..936d77f1ac 100644
--- a/store/cachekv/memiterator.go
+++ b/store/cachekv/memiterator.go
@@ -4,7 +4,7 @@ import (
 	"container/list"
 	"errors"
 
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 
 	"github.com/line/lbm-sdk/v2/types/kv"
 )
@@ -25,7 +25,7 @@ func newMemIterator(start, end []byte, items *list.List, ascending bool) *memIte
 
 	for e := items.Front(); e != nil; e = e.Next() {
 		item := e.Value.(*kv.Pair)
-		if !dbm.IsKeyInDomain(item.Key, start, end) {
+		if !tmdb.IsKeyInDomain(item.Key, start, end) {
 			if entered {
 				break
 			}
diff --git a/store/cachekv/store.go b/store/cachekv/store.go
index b919addf19..ea0097264e 100644
--- a/store/cachekv/store.go
+++ b/store/cachekv/store.go
@@ -10,7 +10,7 @@ import (
 	"time"
 	"unsafe"
 
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 
 	"github.com/line/lbm-sdk/v2/store/tracekv"
 	"github.com/line/lbm-sdk/v2/store/types"
@@ -207,7 +207,7 @@ func (store *Store) dirtyItems(start, end []byte) {
 
 	n := len(store.unsortedCache)
 	for key := range store.unsortedCache {
-		if dbm.IsKeyInDomain(strToByte(key), start, end) {
+		if tmdb.IsKeyInDomain(strToByte(key), start, end) {
 			cacheValue := store.cache[key]
 			unsorted = append(unsorted, &kv.Pair{Key: []byte(key), Value: cacheValue.value})
 		}
diff --git a/store/cachekv/store_bench_test.go b/store/cachekv/store_bench_test.go
index f33c55fe7c..1a186b3406 100644
--- a/store/cachekv/store_bench_test.go
+++ b/store/cachekv/store_bench_test.go
@@ -5,14 +5,14 @@ import (
 	"sort"
 	"testing"
 
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 
 	"github.com/line/lbm-sdk/v2/store/cachekv"
 	"github.com/line/lbm-sdk/v2/store/dbadapter"
 )
 
 func benchmarkCacheKVStoreIterator(numKVs int, b *testing.B) {
-	mem := dbadapter.Store{DB: dbm.NewMemDB()}
+	mem := dbadapter.Store{DB: memdb.NewDB()}
 	cstore := cachekv.NewStore(mem)
 	keys := make([]string, numKVs)
 
diff --git a/store/cachekv/store_test.go b/store/cachekv/store_test.go
index 364a8841e9..4648a1303e 100644
--- a/store/cachekv/store_test.go
+++ b/store/cachekv/store_test.go
@@ -4,17 +4,19 @@ import (
 	"fmt"
 	"testing"
 
-	ostrand "github.com/line/ostracon/libs/rand"
-	dbm "github.com/line/tm-db/v2"
 	"github.com/stretchr/testify/require"
 
+	ostrand "github.com/line/ostracon/libs/rand"
+	tmdb "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
+
 	"github.com/line/lbm-sdk/v2/store/cachekv"
 	"github.com/line/lbm-sdk/v2/store/dbadapter"
 	"github.com/line/lbm-sdk/v2/store/types"
 )
 
 func newCacheKVStore() types.CacheKVStore {
-	mem := dbadapter.Store{DB: dbm.NewMemDB()}
+	mem := dbadapter.Store{DB: memdb.NewDB()}
 	return cachekv.NewStore(mem)
 }
 
@@ -22,7 +24,7 @@ func keyFmt(i int) []byte { return bz(fmt.Sprintf("key%0.8d", i)) }
 func valFmt(i int) []byte { return bz(fmt.Sprintf("value%0.8d", i)) }
 
 func TestCacheKVStore(t *testing.T) {
-	mem := dbadapter.Store{DB: dbm.NewMemDB()}
+	mem := dbadapter.Store{DB: memdb.NewDB()}
 	st := cachekv.NewStore(mem)
 
 	require.Empty(t, st.Get(keyFmt(1)), "Expected `key1` to be empty")
@@ -65,7 +67,7 @@ func TestCacheKVStore(t *testing.T) {
 }
 
 func TestCacheKVStoreNoNilSet(t *testing.T) {
-	mem := dbadapter.Store{DB: dbm.NewMemDB()}
+	mem := dbadapter.Store{DB: memdb.NewDB()}
 	st := cachekv.NewStore(mem)
 	require.Panics(t, func() { st.Set([]byte("key"), nil) }, "setting a nil value should panic")
 	require.Panics(t, func() { st.Set(nil, []byte("value")) }, "setting a nil key should panic")
@@ -73,7 +75,7 @@ func TestCacheKVStoreNoNilSet(t *testing.T) {
 }
 
 func TestCacheKVStoreNested(t *testing.T) {
-	mem := dbadapter.Store{DB: dbm.NewMemDB()}
+	mem := dbadapter.Store{DB: memdb.NewDB()}
 	st := cachekv.NewStore(mem)
 
 	// set. check its there on st and not on mem.
@@ -228,7 +230,7 @@ func TestCacheKVMergeIteratorDeleteLast(t *testing.T) {
 
 func TestCacheKVMergeIteratorDeletes(t *testing.T) {
 	st := newCacheKVStore()
-	truth := dbm.NewMemDB()
+	truth := memdb.NewDB()
 
 	// set some items and write them
 	nItems := 10
@@ -245,7 +247,7 @@ func TestCacheKVMergeIteratorDeletes(t *testing.T) {
 
 	// reset
 	st = newCacheKVStore()
-	truth = dbm.NewMemDB()
+	truth = memdb.NewDB()
 
 	// set some items and write them
 	for i := 0; i < nItems; i++ {
@@ -264,7 +266,7 @@ func TestCacheKVMergeIteratorChunks(t *testing.T) {
 	st := newCacheKVStore()
 
 	// Use the truth to check values on the merge iterator
-	truth := dbm.NewMemDB()
+	truth := memdb.NewDB()
 
 	// sets to the parent
 	setRange(t, st, truth, 0, 20)
@@ -293,7 +295,7 @@ func TestCacheKVMergeIteratorChunks(t *testing.T) {
 
 func TestCacheKVMergeIteratorRandom(t *testing.T) {
 	st := newCacheKVStore()
-	truth := dbm.NewMemDB()
+	truth := memdb.NewDB()
 
 	start, end := 25, 975
 	max := 1000
@@ -324,7 +326,7 @@ func randInt(n int) int {
 }
 
 // useful for replaying a error case if we find one
-func doOp(t *testing.T, st types.CacheKVStore, truth dbm.DB, op int, args ...int) {
+func doOp(t *testing.T, st types.CacheKVStore, truth tmdb.DB, op int, args ...int) {
 	switch op {
 	case opSet:
 		k := args[0]
@@ -349,7 +351,7 @@ func doOp(t *testing.T, st types.CacheKVStore, truth dbm.DB, op int, args ...int
 	}
 }
 
-func doRandomOp(t *testing.T, st types.CacheKVStore, truth dbm.DB, maxKey int) {
+func doRandomOp(t *testing.T, st types.CacheKVStore, truth tmdb.DB, maxKey int) {
 	r := randInt(totalOps)
 	switch r {
 	case opSet:
@@ -390,7 +392,7 @@ func assertIterateDomain(t *testing.T, st types.KVStore, expectedN int) {
 	require.Equal(t, expectedN, i)
 }
 
-func assertIterateDomainCheck(t *testing.T, st types.KVStore, mem dbm.DB, r []keyRange) {
+func assertIterateDomainCheck(t *testing.T, st types.KVStore, mem tmdb.DB, r []keyRange) {
 	// iterate over each and check they match the other
 	itr := st.Iterator(nil, nil)
 	itr2, err := mem.Iterator(nil, nil) // ground truth
@@ -421,7 +423,7 @@ func assertIterateDomainCheck(t *testing.T, st types.KVStore, mem dbm.DB, r []ke
 	require.False(t, itr2.Valid())
 }
 
-func assertIterateDomainCompare(t *testing.T, st types.KVStore, mem dbm.DB) {
+func assertIterateDomainCompare(t *testing.T, st types.KVStore, mem tmdb.DB) {
 	// iterate over each and check they match the other
 	itr := st.Iterator(nil, nil)
 	itr2, err := mem.Iterator(nil, nil) // ground truth
@@ -445,7 +447,7 @@ func checkIterators(t *testing.T, itr, itr2 types.Iterator) {
 
 //--------------------------------------------------------
 
-func setRange(t *testing.T, st types.KVStore, mem dbm.DB, start, end int) {
+func setRange(t *testing.T, st types.KVStore, mem tmdb.DB, start, end int) {
 	for i := start; i < end; i++ {
 		st.Set(keyFmt(i), valFmt(i))
 		err := mem.Set(keyFmt(i), valFmt(i))
@@ -453,7 +455,7 @@ func setRange(t *testing.T, st types.KVStore, mem dbm.DB, start, end int) {
 	}
 }
 
-func deleteRange(t *testing.T, st types.KVStore, mem dbm.DB, start, end int) {
+func deleteRange(t *testing.T, st types.KVStore, mem tmdb.DB, start, end int) {
 	for i := start; i < end; i++ {
 		st.Delete(keyFmt(i))
 		err := mem.Delete(keyFmt(i))
diff --git a/store/cachemulti/store.go b/store/cachemulti/store.go
index 167561cde0..f48dfc71bd 100644
--- a/store/cachemulti/store.go
+++ b/store/cachemulti/store.go
@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"io"
 
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 
 	"github.com/line/lbm-sdk/v2/store/cachekv"
 	"github.com/line/lbm-sdk/v2/store/dbadapter"
@@ -58,7 +58,7 @@ func NewFromKVStore(
 // NewStore creates a new Store object from a mapping of store keys to
 // CacheWrapper objects. Each CacheWrapper store is a branched store.
 func NewStore(
-	db dbm.DB, stores map[types.StoreKey]types.CacheWrapper, keys map[string]types.StoreKey,
+	db tmdb.DB, stores map[types.StoreKey]types.CacheWrapper, keys map[string]types.StoreKey,
 	traceWriter io.Writer, traceContext types.TraceContext,
 ) Store {
 
diff --git a/store/dbadapter/store.go b/store/dbadapter/store.go
index b425350cee..7d110c37db 100644
--- a/store/dbadapter/store.go
+++ b/store/dbadapter/store.go
@@ -3,16 +3,16 @@ package dbadapter
 import (
 	"io"
 
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 
 	"github.com/line/lbm-sdk/v2/store/cachekv"
 	"github.com/line/lbm-sdk/v2/store/tracekv"
 	"github.com/line/lbm-sdk/v2/store/types"
 )
 
-// Wrapper type for dbm.Db with implementation of KVStore
+// Wrapper type for tmdb.Db with implementation of KVStore
 type Store struct {
-	dbm.DB
+	tmdb.DB
 }
 
 // Get wraps the underlying DB's Get method panicing on error.
@@ -85,5 +85,5 @@ func (dsa Store) CacheWrapWithTrace(w io.Writer, tc types.TraceContext) types.Ca
 	return cachekv.NewStore(tracekv.NewStore(dsa, w, tc))
 }
 
-// dbm.DB implements KVStore so we can CacheKVStore it.
+// tmdb.DB implements KVStore so we can CacheKVStore it.
 var _ types.KVStore = Store{}
diff --git a/store/gaskv/store_test.go b/store/gaskv/store_test.go
index dc936adb90..a8838ef1bb 100644
--- a/store/gaskv/store_test.go
+++ b/store/gaskv/store_test.go
@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"testing"
 
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 
 	"github.com/line/lbm-sdk/v2/store/dbadapter"
 	"github.com/line/lbm-sdk/v2/store/gaskv"
@@ -19,7 +19,7 @@ func keyFmt(i int) []byte { return bz(fmt.Sprintf("key%0.8d", i)) }
 func valFmt(i int) []byte { return bz(fmt.Sprintf("value%0.8d", i)) }
 
 func TestGasKVStoreBasic(t *testing.T) {
-	mem := dbadapter.Store{DB: dbm.NewMemDB()}
+	mem := dbadapter.Store{DB: memdb.NewDB()}
 	meter := types.NewGasMeter(10000)
 	st := gaskv.NewStore(mem, meter, types.KVGasConfig())
 
@@ -39,7 +39,7 @@ func TestGasKVStoreBasic(t *testing.T) {
 }
 
 func TestGasKVStoreIterator(t *testing.T) {
-	mem := dbadapter.Store{DB: dbm.NewMemDB()}
+	mem := dbadapter.Store{DB: memdb.NewDB()}
 	meter := types.NewGasMeter(10000)
 	st := gaskv.NewStore(mem, meter, types.KVGasConfig())
 	require.False(t, st.Has(keyFmt(1)))
@@ -91,14 +91,14 @@ func TestGasKVStoreIterator(t *testing.T) {
 }
 
 func TestGasKVStoreOutOfGasSet(t *testing.T) {
-	mem := dbadapter.Store{DB: dbm.NewMemDB()}
+	mem := dbadapter.Store{DB: memdb.NewDB()}
 	meter := types.NewGasMeter(0)
 	st := gaskv.NewStore(mem, meter, types.KVGasConfig())
 	require.Panics(t, func() { st.Set(keyFmt(1), valFmt(1)) }, "Expected out-of-gas")
 }
 
 func TestGasKVStoreOutOfGasIterator(t *testing.T) {
-	mem := dbadapter.Store{DB: dbm.NewMemDB()}
+	mem := dbadapter.Store{DB: memdb.NewDB()}
 	meter := types.NewGasMeter(20000)
 	st := gaskv.NewStore(mem, meter, types.KVGasConfig())
 	st.Set(keyFmt(1), valFmt(1))
diff --git a/store/iavl/store.go b/store/iavl/store.go
index b4a3313145..a26bf81356 100644
--- a/store/iavl/store.go
+++ b/store/iavl/store.go
@@ -11,7 +11,7 @@ import (
 	"github.com/line/iavl/v2"
 	abci "github.com/line/ostracon/abci/types"
 	ostcrypto "github.com/line/ostracon/proto/ostracon/crypto"
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 
 	"github.com/line/lbm-sdk/v2/store/cachekv"
 	"github.com/line/lbm-sdk/v2/store/tracekv"
@@ -42,7 +42,7 @@ type Store struct {
 // LoadStore returns an IAVL Store as a CommitKVStore. Internally, it will load the
 // store's version (id) from the provided DB. An error is returned if the version
 // fails to load, or if called with a positive version on an empty tree.
-func LoadStore(db dbm.DB, id types.CommitID, lazyLoading bool) (types.CommitKVStore, error) {
+func LoadStore(db tmdb.DB, id types.CommitID, lazyLoading bool) (types.CommitKVStore, error) {
 	return LoadStoreWithInitialVersion(db, id, lazyLoading, 0)
 }
 
@@ -50,7 +50,7 @@ func LoadStore(db dbm.DB, id types.CommitID, lazyLoading bool) (types.CommitKVSt
 // to the one given. Internally, it will load the store's version (id) from the
 // provided DB. An error is returned if the version fails to load, or if called with a positive
 // version on an empty tree.
-func LoadStoreWithInitialVersion(db dbm.DB, id types.CommitID, lazyLoading bool, initialVersion uint64) (types.CommitKVStore, error) {
+func LoadStoreWithInitialVersion(db tmdb.DB, id types.CommitID, lazyLoading bool, initialVersion uint64) (types.CommitKVStore, error) {
 	tree, err := iavl.NewMutableTreeWithOpts(db, defaultIAVLCacheSize, &iavl.Options{InitialVersion: initialVersion})
 	if err != nil {
 		return nil, err
diff --git a/store/iavl/store_test.go b/store/iavl/store_test.go
index 5a898a901e..6b746d6c40 100644
--- a/store/iavl/store_test.go
+++ b/store/iavl/store_test.go
@@ -7,7 +7,8 @@ import (
 
 	"github.com/line/iavl/v2"
 	abci "github.com/line/ostracon/abci/types"
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/require"
 
 	"github.com/line/lbm-sdk/v2/store/types"
@@ -30,7 +31,7 @@ func randBytes(numBytes int) []byte {
 }
 
 // make a tree with data from above and save it
-func newAlohaTree(t *testing.T, db dbm.DB) (*iavl.MutableTree, types.CommitID) {
+func newAlohaTree(t *testing.T, db tmdb.DB) (*iavl.MutableTree, types.CommitID) {
 	tree, err := iavl.NewMutableTree(db, cacheSize)
 	require.NoError(t, err)
 
@@ -51,7 +52,7 @@ func newAlohaTree(t *testing.T, db dbm.DB) (*iavl.MutableTree, types.CommitID) {
 }
 
 func TestLoadStore(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	tree, _ := newAlohaTree(t, db)
 	store := UnsafeNewStore(tree)
 
@@ -107,7 +108,7 @@ func TestLoadStore(t *testing.T) {
 }
 
 func TestGetImmutable(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	tree, cID := newAlohaTree(t, db)
 	store := UnsafeNewStore(tree)
 
@@ -137,7 +138,7 @@ func TestGetImmutable(t *testing.T) {
 }
 
 func TestTestGetImmutableIterator(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	tree, cID := newAlohaTree(t, db)
 	store := UnsafeNewStore(tree)
 
@@ -160,7 +161,7 @@ func TestTestGetImmutableIterator(t *testing.T) {
 }
 
 func TestIAVLStoreGetSetHasDelete(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	tree, _ := newAlohaTree(t, db)
 	iavlStore := UnsafeNewStore(tree)
 
@@ -185,7 +186,7 @@ func TestIAVLStoreGetSetHasDelete(t *testing.T) {
 }
 
 func TestIAVLStoreNoNilSet(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	tree, _ := newAlohaTree(t, db)
 	iavlStore := UnsafeNewStore(tree)
 
@@ -196,7 +197,7 @@ func TestIAVLStoreNoNilSet(t *testing.T) {
 }
 
 func TestIAVLIterator(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	tree, _ := newAlohaTree(t, db)
 	iavlStore := UnsafeNewStore(tree)
 	iter := iavlStore.Iterator([]byte("aloha"), []byte("hellz"))
@@ -269,7 +270,7 @@ func TestIAVLIterator(t *testing.T) {
 }
 
 func TestIAVLReverseIterator(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 
 	tree, err := iavl.NewMutableTree(db, cacheSize)
 	require.NoError(t, err)
@@ -303,7 +304,7 @@ func TestIAVLReverseIterator(t *testing.T) {
 }
 
 func TestIAVLPrefixIterator(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	tree, err := iavl.NewMutableTree(db, cacheSize)
 	require.NoError(t, err)
 
@@ -367,7 +368,7 @@ func TestIAVLPrefixIterator(t *testing.T) {
 }
 
 func TestIAVLReversePrefixIterator(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	tree, err := iavl.NewMutableTree(db, cacheSize)
 	require.NoError(t, err)
 
@@ -435,7 +436,7 @@ func nextVersion(iavl *Store) {
 }
 
 func TestIAVLNoPrune(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	tree, err := iavl.NewMutableTree(db, cacheSize)
 	require.NoError(t, err)
 
@@ -454,7 +455,7 @@ func TestIAVLNoPrune(t *testing.T) {
 }
 
 func TestIAVLStoreQuery(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	tree, err := iavl.NewMutableTree(db, cacheSize)
 	require.NoError(t, err)
 
@@ -556,7 +557,7 @@ func TestIAVLStoreQuery(t *testing.T) {
 }
 
 func BenchmarkIAVLIteratorNext(b *testing.B) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	treeSize := 1000
 	tree, err := iavl.NewMutableTree(db, cacheSize)
 	require.NoError(b, err)
@@ -586,12 +587,12 @@ func BenchmarkIAVLIteratorNext(b *testing.B) {
 func TestSetInitialVersion(t *testing.T) {
 	testCases := []struct {
 		name     string
-		storeFn  func(db *dbm.MemDB) *Store
+		storeFn  func(db *memdb.MemDB) *Store
 		expPanic bool
 	}{
 		{
 			"works with a mutable tree",
-			func(db *dbm.MemDB) *Store {
+			func(db *memdb.MemDB) *Store {
 				tree, err := iavl.NewMutableTree(db, cacheSize)
 				require.NoError(t, err)
 				store := UnsafeNewStore(tree)
@@ -601,7 +602,7 @@ func TestSetInitialVersion(t *testing.T) {
 		},
 		{
 			"throws error on immutable tree",
-			func(db *dbm.MemDB) *Store {
+			func(db *memdb.MemDB) *Store {
 				tree, err := iavl.NewMutableTree(db, cacheSize)
 				require.NoError(t, err)
 				store := UnsafeNewStore(tree)
@@ -620,7 +621,7 @@ func TestSetInitialVersion(t *testing.T) {
 		tc := tc
 
 		t.Run(tc.name, func(t *testing.T) {
-			db := dbm.NewMemDB()
+			db := memdb.NewDB()
 			store := tc.storeFn(db)
 
 			if tc.expPanic {
diff --git a/store/iavl/tree_test.go b/store/iavl/tree_test.go
index 561b5e0ea9..96d1572e2c 100644
--- a/store/iavl/tree_test.go
+++ b/store/iavl/tree_test.go
@@ -4,13 +4,13 @@ import (
 	"testing"
 
 	"github.com/line/iavl/v2"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/require"
 )
 
 func TestImmutableTreePanics(t *testing.T) {
 	t.Parallel()
-	immTree := iavl.NewImmutableTree(dbm.NewMemDB(), 100)
+	immTree := iavl.NewImmutableTree(memdb.NewDB(), 100)
 	it := &immutableTree{immTree}
 	require.Panics(t, func() { it.Set([]byte{}, []byte{}) })
 	require.Panics(t, func() { it.Remove([]byte{}) })
diff --git a/store/mem/store.go b/store/mem/store.go
index ce54292e51..7955982a8f 100644
--- a/store/mem/store.go
+++ b/store/mem/store.go
@@ -3,7 +3,7 @@ package mem
 import (
 	"io"
 
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 
 	"github.com/line/lbm-sdk/v2/store/cachekv"
 	"github.com/line/lbm-sdk/v2/store/dbadapter"
@@ -23,10 +23,10 @@ type Store struct {
 }
 
 func NewStore() *Store {
-	return NewStoreWithDB(dbm.NewMemDB())
+	return NewStoreWithDB(memdb.NewDB())
 }
 
-func NewStoreWithDB(db *dbm.MemDB) *Store { // nolint: interfacer
+func NewStoreWithDB(db *memdb.MemDB) *Store { // nolint: interfacer
 	return &Store{Store: dbadapter.Store{DB: db}}
 }
 
diff --git a/store/prefix/store_test.go b/store/prefix/store_test.go
index 13d4977d49..9bfa522f50 100644
--- a/store/prefix/store_test.go
+++ b/store/prefix/store_test.go
@@ -4,10 +4,10 @@ import (
 	"crypto/rand"
 	"testing"
 
-	dbm "github.com/line/tm-db/v2"
 	"github.com/stretchr/testify/require"
 
 	liavl "github.com/line/iavl/v2"
+	"github.com/line/tm-db/v2/memdb"
 
 	"github.com/line/lbm-sdk/v2/store/dbadapter"
 	"github.com/line/lbm-sdk/v2/store/gaskv"
@@ -87,7 +87,7 @@ func testPrefixStore(t *testing.T, baseStore types.KVStore, prefix []byte) {
 }
 
 func TestIAVLStorePrefix(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	tree, err := liavl.NewMutableTree(db, cacheSize)
 	require.NoError(t, err)
 	iavlStore := iavl.UnsafeNewStore(tree)
@@ -97,13 +97,13 @@ func TestIAVLStorePrefix(t *testing.T) {
 
 func TestPrefixKVStoreNoNilSet(t *testing.T) {
 	meter := types.NewGasMeter(100000000)
-	mem := dbadapter.Store{DB: dbm.NewMemDB()}
+	mem := dbadapter.Store{DB: memdb.NewDB()}
 	gasStore := gaskv.NewStore(mem, meter, types.KVGasConfig())
 	require.Panics(t, func() { gasStore.Set([]byte("key"), nil) }, "setting a nil value should panic")
 }
 
 func TestPrefixStoreIterate(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	baseStore := dbadapter.Store{DB: db}
 	prefix := []byte("test")
 	prefixStore := NewStore(baseStore, prefix)
@@ -149,7 +149,7 @@ func TestCloneAppend(t *testing.T) {
 }
 
 func TestPrefixStoreIteratorEdgeCase(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	baseStore := dbadapter.Store{DB: db}
 
 	// overflow in cpIncr
@@ -179,7 +179,7 @@ func TestPrefixStoreIteratorEdgeCase(t *testing.T) {
 }
 
 func TestPrefixStoreReverseIteratorEdgeCase(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	baseStore := dbadapter.Store{DB: db}
 
 	// overflow in cpIncr
@@ -207,7 +207,7 @@ func TestPrefixStoreReverseIteratorEdgeCase(t *testing.T) {
 
 	iter.Close()
 
-	db = dbm.NewMemDB()
+	db = memdb.NewDB()
 	baseStore = dbadapter.Store{DB: db}
 
 	// underflow in cpDecr
@@ -238,7 +238,7 @@ func TestPrefixStoreReverseIteratorEdgeCase(t *testing.T) {
 // Tests below are ported from https://github.com/tendermint/tendermint/blob/master/libs/db/prefix_db_test.go
 
 func mockStoreWithStuff() types.KVStore {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	store := dbadapter.Store{DB: db}
 	// Under "key" prefix
 	store.Set(bz("key"), bz("value"))
diff --git a/store/rootmulti/proof_test.go b/store/rootmulti/proof_test.go
index 9cc437a13e..70351fc45e 100644
--- a/store/rootmulti/proof_test.go
+++ b/store/rootmulti/proof_test.go
@@ -4,7 +4,7 @@ import (
 	"testing"
 
 	abci "github.com/line/ostracon/abci/types"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/require"
 
 	"github.com/line/lbm-sdk/v2/store/iavl"
@@ -13,7 +13,7 @@ import (
 
 func TestVerifyIAVLStoreQueryProof(t *testing.T) {
 	// Create main tree for testing.
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	iStore, err := iavl.LoadStore(db, types.CommitID{}, false)
 	store := iStore.(*iavl.Store)
 	require.Nil(t, err)
@@ -56,7 +56,7 @@ func TestVerifyIAVLStoreQueryProof(t *testing.T) {
 
 func TestVerifyMultiStoreQueryProof(t *testing.T) {
 	// Create main tree for testing.
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	store := NewStore(db)
 	iavlStoreKey := types.NewKVStoreKey("iavlStoreKey")
 
@@ -111,7 +111,7 @@ func TestVerifyMultiStoreQueryProof(t *testing.T) {
 
 func TestVerifyMultiStoreQueryProofAbsence(t *testing.T) {
 	// Create main tree for testing.
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	store := NewStore(db)
 	iavlStoreKey := types.NewKVStoreKey("iavlStoreKey")
 
diff --git a/store/rootmulti/store.go b/store/rootmulti/store.go
index 4b853de508..76df836dbc 100644
--- a/store/rootmulti/store.go
+++ b/store/rootmulti/store.go
@@ -14,7 +14,7 @@ import (
 	gogotypes "github.com/gogo/protobuf/types"
 	iavltree "github.com/line/iavl/v2"
 	abci "github.com/line/ostracon/abci/types"
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 	"github.com/pkg/errors"
 
 	"github.com/line/lbm-sdk/v2/snapshots"
@@ -44,7 +44,7 @@ const (
 // cacheMultiStore which is used for branching other MultiStores. It implements
 // the CommitMultiStore interface.
 type Store struct {
-	db             dbm.DB
+	db             tmdb.DB
 	lastCommitInfo *types.CommitInfo
 	pruningOpts    types.PruningOptions
 	storesParams   map[types.StoreKey]storeParams
@@ -69,7 +69,7 @@ var (
 // store will be created with a PruneNothing pruning strategy by default. After
 // a store is created, KVStores must be mounted and finally LoadLatestVersion or
 // LoadVersion must be called.
-func NewStore(db dbm.DB) *Store {
+func NewStore(db tmdb.DB) *Store {
 	return &Store{
 		db:           db,
 		pruningOpts:  types.PruneNothing,
@@ -103,7 +103,7 @@ func (rs *Store) GetStoreType() types.StoreType {
 }
 
 // MountStoreWithDB implements CommitMultiStore.
-func (rs *Store) MountStoreWithDB(key types.StoreKey, typ types.StoreType, db dbm.DB) {
+func (rs *Store) MountStoreWithDB(key types.StoreKey, typ types.StoreType, db tmdb.DB) {
 	if key == nil {
 		panic("MountIAVLStore() key cannot be nil")
 	}
@@ -811,13 +811,13 @@ func (rs *Store) Restore(
 }
 
 func (rs *Store) loadCommitStoreFromParams(key types.StoreKey, id types.CommitID, params storeParams) (types.CommitKVStore, error) {
-	var db dbm.DB
+	var db tmdb.DB
 
 	if params.db != nil {
-		db = dbm.NewPrefixDB(params.db, []byte("s/_/"))
+		db = tmdb.NewPrefixDB(params.db, []byte("s/_/"))
 	} else {
 		prefix := "s/k:" + params.key.Name() + "/"
-		db = dbm.NewPrefixDB(rs.db, []byte(prefix))
+		db = tmdb.NewPrefixDB(rs.db, []byte(prefix))
 	}
 
 	switch params.typ {
@@ -889,12 +889,12 @@ func (rs *Store) buildCommitInfo(version int64) *types.CommitInfo {
 
 type storeParams struct {
 	key            types.StoreKey
-	db             dbm.DB
+	db             tmdb.DB
 	typ            types.StoreType
 	initialVersion uint64
 }
 
-func getLatestVersion(db dbm.DB) int64 {
+func getLatestVersion(db tmdb.DB) int64 {
 	bz, err := db.Get([]byte(latestVersionKey))
 	if err != nil {
 		panic(err)
@@ -935,7 +935,7 @@ func commitStores(version int64, storeMap map[types.StoreKey]types.CommitKVStore
 }
 
 // Gets commitInfo from disk.
-func getCommitInfo(db dbm.DB, ver int64) (*types.CommitInfo, error) {
+func getCommitInfo(db tmdb.DB, ver int64) (*types.CommitInfo, error) {
 	cInfoKey := fmt.Sprintf(commitInfoKeyFmt, ver)
 
 	bz, err := db.Get([]byte(cInfoKey))
@@ -953,7 +953,7 @@ func getCommitInfo(db dbm.DB, ver int64) (*types.CommitInfo, error) {
 	return cInfo, nil
 }
 
-func setCommitInfo(batch dbm.Batch, version int64, cInfo *types.CommitInfo) {
+func setCommitInfo(batch tmdb.Batch, version int64, cInfo *types.CommitInfo) {
 	bz, err := cInfo.Marshal()
 	if err != nil {
 		panic(err)
@@ -963,7 +963,7 @@ func setCommitInfo(batch dbm.Batch, version int64, cInfo *types.CommitInfo) {
 	batch.Set([]byte(cInfoKey), bz)
 }
 
-func setLatestVersion(batch dbm.Batch, version int64) {
+func setLatestVersion(batch tmdb.Batch, version int64) {
 	bz, err := gogotypes.StdInt64Marshal(version)
 	if err != nil {
 		panic(err)
@@ -972,7 +972,7 @@ func setLatestVersion(batch dbm.Batch, version int64) {
 	batch.Set([]byte(latestVersionKey), bz)
 }
 
-func setPruningHeights(batch dbm.Batch, pruneHeights []int64) {
+func setPruningHeights(batch tmdb.Batch, pruneHeights []int64) {
 	bz := make([]byte, 0)
 	for _, ph := range pruneHeights {
 		buf := make([]byte, 8)
@@ -983,7 +983,7 @@ func setPruningHeights(batch dbm.Batch, pruneHeights []int64) {
 	batch.Set([]byte(pruneHeightsKey), bz)
 }
 
-func getPruningHeights(db dbm.DB) ([]int64, error) {
+func getPruningHeights(db tmdb.DB) ([]int64, error) {
 	bz, err := db.Get([]byte(pruneHeightsKey))
 	if err != nil {
 		return nil, fmt.Errorf("failed to get pruned heights: %w", err)
@@ -1003,7 +1003,7 @@ func getPruningHeights(db dbm.DB) ([]int64, error) {
 	return prunedHeights, nil
 }
 
-func flushMetadata(db dbm.DB, version int64, cInfo *types.CommitInfo, pruneHeights []int64) {
+func flushMetadata(db tmdb.DB, version int64, cInfo *types.CommitInfo, pruneHeights []int64) {
 	batch := db.NewBatch()
 	defer batch.Close()
 
diff --git a/store/rootmulti/store_test.go b/store/rootmulti/store_test.go
index 13fb116fb4..f4d2460949 100644
--- a/store/rootmulti/store_test.go
+++ b/store/rootmulti/store_test.go
@@ -11,11 +11,13 @@ import (
 	"math/rand"
 	"testing"
 
-	abci "github.com/line/ostracon/abci/types"
-	dbm "github.com/line/tm-db/v2"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
+	abci "github.com/line/ostracon/abci/types"
+	tmdb "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
+
 	snapshottypes "github.com/line/lbm-sdk/v2/snapshots/types"
 	"github.com/line/lbm-sdk/v2/store/iavl"
 	sdkmaps "github.com/line/lbm-sdk/v2/store/internal/maps"
@@ -24,13 +26,13 @@ import (
 )
 
 func TestStoreType(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	store := NewStore(db)
 	store.MountStoreWithDB(types.NewKVStoreKey("store1"), types.StoreTypeIAVL, db)
 }
 
 func TestGetCommitKVStore(t *testing.T) {
-	var db dbm.DB = dbm.NewMemDB()
+	var db tmdb.DB = memdb.NewDB()
 	ms := newMultiStoreWithMounts(db, types.PruneDefault)
 	err := ms.LoadLatestVersion()
 	require.Nil(t, err)
@@ -47,7 +49,7 @@ func TestGetCommitKVStore(t *testing.T) {
 }
 
 func TestStoreMount(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	store := NewStore(db)
 
 	key1 := types.NewKVStoreKey("store1")
@@ -63,7 +65,7 @@ func TestStoreMount(t *testing.T) {
 }
 
 func TestCacheMultiStoreWithVersion(t *testing.T) {
-	var db dbm.DB = dbm.NewMemDB()
+	var db tmdb.DB = memdb.NewDB()
 	ms := newMultiStoreWithMounts(db, types.PruneNothing)
 	err := ms.LoadLatestVersion()
 	require.Nil(t, err)
@@ -100,7 +102,7 @@ func TestCacheMultiStoreWithVersion(t *testing.T) {
 }
 
 func TestHashStableWithEmptyCommit(t *testing.T) {
-	var db dbm.DB = dbm.NewMemDB()
+	var db tmdb.DB = memdb.NewDB()
 	ms := newMultiStoreWithMounts(db, types.PruneNothing)
 	err := ms.LoadLatestVersion()
 	require.Nil(t, err)
@@ -124,7 +126,7 @@ func TestHashStableWithEmptyCommit(t *testing.T) {
 }
 
 func TestMultistoreCommitLoad(t *testing.T) {
-	var db dbm.DB = dbm.NewMemDB()
+	var db tmdb.DB = memdb.NewDB()
 	store := newMultiStoreWithMounts(db, types.PruneNothing)
 	err := store.LoadLatestVersion()
 	require.Nil(t, err)
@@ -171,7 +173,7 @@ func TestMultistoreCommitLoad(t *testing.T) {
 }
 
 func TestMultistoreLoadWithUpgrade(t *testing.T) {
-	var db dbm.DB = dbm.NewMemDB()
+	var db tmdb.DB = memdb.NewDB()
 	store := newMultiStoreWithMounts(db, types.PruneNothing)
 	err := store.LoadLatestVersion()
 	require.Nil(t, err)
@@ -313,7 +315,7 @@ func TestParsePath(t *testing.T) {
 }
 
 func TestMultiStoreRestart(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	pruning := types.PruningOptions{
 		KeepRecent: 2,
 		KeepEvery:  3,
@@ -396,7 +398,7 @@ func TestMultiStoreRestart(t *testing.T) {
 }
 
 func TestMultiStoreQuery(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	multi := newMultiStoreWithMounts(db, types.PruneNothing)
 	err := multi.LoadLatestVersion()
 	require.Nil(t, err)
@@ -484,7 +486,7 @@ func TestMultiStore_Pruning(t *testing.T) {
 		tc := tc
 
 		t.Run(tc.name, func(t *testing.T) {
-			db := dbm.NewMemDB()
+			db := memdb.NewDB()
 			ms := newMultiStoreWithMounts(db, tc.po)
 			require.NoError(t, ms.LoadLatestVersion())
 
@@ -506,7 +508,7 @@ func TestMultiStore_Pruning(t *testing.T) {
 }
 
 func TestMultiStore_PruningRestart(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	ms := newMultiStoreWithMounts(db, types.NewPruningOptions(2, 3, 11))
 	require.NoError(t, ms.LoadLatestVersion())
 
@@ -544,7 +546,7 @@ func TestMultistoreSnapshot_Checksum(t *testing.T) {
 	// This checksum test makes sure that the byte stream remains identical. If the test fails
 	// without having changed the data (e.g. because the Protobuf or zlib encoding changes),
 	// snapshottypes.CurrentFormat must be bumped.
-	store := newMultiStoreWithGeneratedData(dbm.NewMemDB(), 5, 10000)
+	store := newMultiStoreWithGeneratedData(memdb.NewDB(), 5, 10000)
 	version := uint64(store.LastCommitID().Version)
 
 	testcases := []struct {
@@ -580,7 +582,7 @@ func TestMultistoreSnapshot_Checksum(t *testing.T) {
 }
 
 func TestMultistoreSnapshot_Errors(t *testing.T) {
-	store := newMultiStoreWithMixedMountsAndBasicData(dbm.NewMemDB())
+	store := newMultiStoreWithMixedMountsAndBasicData(memdb.NewDB())
 
 	testcases := map[string]struct {
 		height     uint64
@@ -605,7 +607,7 @@ func TestMultistoreSnapshot_Errors(t *testing.T) {
 }
 
 func TestMultistoreRestore_Errors(t *testing.T) {
-	store := newMultiStoreWithMixedMounts(dbm.NewMemDB())
+	store := newMultiStoreWithMixedMounts(memdb.NewDB())
 
 	testcases := map[string]struct {
 		height     uint64
@@ -629,8 +631,8 @@ func TestMultistoreRestore_Errors(t *testing.T) {
 }
 
 func TestMultistoreSnapshotRestore(t *testing.T) {
-	source := newMultiStoreWithMixedMountsAndBasicData(dbm.NewMemDB())
-	target := newMultiStoreWithMixedMounts(dbm.NewMemDB())
+	source := newMultiStoreWithMixedMountsAndBasicData(memdb.NewDB())
+	target := newMultiStoreWithMixedMounts(memdb.NewDB())
 	version := uint64(source.LastCommitID().Version)
 	require.EqualValues(t, 3, version)
 
@@ -655,7 +657,7 @@ func TestMultistoreSnapshotRestore(t *testing.T) {
 }
 
 func TestSetInitialVersion(t *testing.T) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	multi := newMultiStoreWithMounts(db, types.PruneNothing)
 
 	require.NoError(t, multi.LoadLatestVersion())
@@ -690,13 +692,13 @@ func BenchmarkMultistoreSnapshotRestore1M(b *testing.B) {
 
 func benchmarkMultistoreSnapshot(b *testing.B, stores uint8, storeKeys uint64) {
 	b.StopTimer()
-	source := newMultiStoreWithGeneratedData(dbm.NewMemDB(), stores, storeKeys)
+	source := newMultiStoreWithGeneratedData(memdb.NewDB(), stores, storeKeys)
 	version := source.LastCommitID().Version
 	require.EqualValues(b, 1, version)
 	b.StartTimer()
 
 	for i := 0; i < b.N; i++ {
-		target := NewStore(dbm.NewMemDB())
+		target := NewStore(memdb.NewDB())
 		for key := range source.stores {
 			target.MountStoreWithDB(key, types.StoreTypeIAVL, nil)
 		}
@@ -717,13 +719,13 @@ func benchmarkMultistoreSnapshot(b *testing.B, stores uint8, storeKeys uint64) {
 
 func benchmarkMultistoreSnapshotRestore(b *testing.B, stores uint8, storeKeys uint64) {
 	b.StopTimer()
-	source := newMultiStoreWithGeneratedData(dbm.NewMemDB(), stores, storeKeys)
+	source := newMultiStoreWithGeneratedData(memdb.NewDB(), stores, storeKeys)
 	version := uint64(source.LastCommitID().Version)
 	require.EqualValues(b, 1, version)
 	b.StartTimer()
 
 	for i := 0; i < b.N; i++ {
-		target := NewStore(dbm.NewMemDB())
+		target := NewStore(memdb.NewDB())
 		for key := range source.stores {
 			target.MountStoreWithDB(key, types.StoreTypeIAVL, nil)
 		}
@@ -742,7 +744,7 @@ func benchmarkMultistoreSnapshotRestore(b *testing.B, stores uint8, storeKeys ui
 //-----------------------------------------------------------------------
 // utils
 
-func newMultiStoreWithMounts(db dbm.DB, pruningOpts types.PruningOptions) *Store {
+func newMultiStoreWithMounts(db tmdb.DB, pruningOpts types.PruningOptions) *Store {
 	store := NewStore(db)
 	store.pruningOpts = pruningOpts
 
@@ -753,7 +755,7 @@ func newMultiStoreWithMounts(db dbm.DB, pruningOpts types.PruningOptions) *Store
 	return store
 }
 
-func newMultiStoreWithMixedMounts(db dbm.DB) *Store {
+func newMultiStoreWithMixedMounts(db tmdb.DB) *Store {
 	store := NewStore(db)
 	store.MountStoreWithDB(types.NewKVStoreKey("iavl1"), types.StoreTypeIAVL, nil)
 	store.MountStoreWithDB(types.NewKVStoreKey("iavl2"), types.StoreTypeIAVL, nil)
@@ -764,7 +766,7 @@ func newMultiStoreWithMixedMounts(db dbm.DB) *Store {
 	return store
 }
 
-func newMultiStoreWithMixedMountsAndBasicData(db dbm.DB) *Store {
+func newMultiStoreWithMixedMountsAndBasicData(db tmdb.DB) *Store {
 	store := newMultiStoreWithMixedMounts(db)
 	store1 := store.getStoreByName("iavl1").(types.CommitKVStore)
 	store2 := store.getStoreByName("iavl2").(types.CommitKVStore)
@@ -790,7 +792,7 @@ func newMultiStoreWithMixedMountsAndBasicData(db dbm.DB) *Store {
 	return store
 }
 
-func newMultiStoreWithGeneratedData(db dbm.DB, stores uint8, storeKeys uint64) *Store {
+func newMultiStoreWithGeneratedData(db tmdb.DB, stores uint8, storeKeys uint64) *Store {
 	multiStore := NewStore(db)
 	r := rand.New(rand.NewSource(49872768940)) // Fixed seed for deterministic tests
 
@@ -822,7 +824,7 @@ func newMultiStoreWithGeneratedData(db dbm.DB, stores uint8, storeKeys uint64) *
 	return multiStore
 }
 
-func newMultiStoreWithModifiedMounts(db dbm.DB, pruningOpts types.PruningOptions) (*Store, *types.StoreUpgrades) {
+func newMultiStoreWithModifiedMounts(db tmdb.DB, pruningOpts types.PruningOptions) (*Store, *types.StoreUpgrades) {
 	store := NewStore(db)
 	store.pruningOpts = pruningOpts
 
diff --git a/store/store.go b/store/store.go
index 7b31e436c5..e459da6a47 100644
--- a/store/store.go
+++ b/store/store.go
@@ -1,14 +1,14 @@
 package store
 
 import (
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 
 	"github.com/line/lbm-sdk/v2/store/cache"
 	"github.com/line/lbm-sdk/v2/store/rootmulti"
 	"github.com/line/lbm-sdk/v2/store/types"
 )
 
-func NewCommitMultiStore(db dbm.DB) types.CommitMultiStore {
+func NewCommitMultiStore(db tmdb.DB) types.CommitMultiStore {
 	return rootmulti.NewStore(db)
 }
 
diff --git a/store/tracekv/store_test.go b/store/tracekv/store_test.go
index f192e6e727..1138dfe4cc 100644
--- a/store/tracekv/store_test.go
+++ b/store/tracekv/store_test.go
@@ -8,7 +8,7 @@ import (
 
 	"github.com/stretchr/testify/require"
 
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 
 	"github.com/line/lbm-sdk/v2/store/dbadapter"
 	"github.com/line/lbm-sdk/v2/store/prefix"
@@ -38,7 +38,7 @@ func newTraceKVStore(w io.Writer) *tracekv.Store {
 }
 
 func newEmptyTraceKVStore(w io.Writer) *tracekv.Store {
-	memDB := dbadapter.Store{DB: dbm.NewMemDB()}
+	memDB := dbadapter.Store{DB: memdb.NewDB()}
 	tc := types.TraceContext(map[string]interface{}{"blockHeight": 64})
 
 	return tracekv.NewStore(memDB, w, tc)
@@ -277,7 +277,7 @@ func TestTraceKVStorePrefix(t *testing.T) {
 }
 
 func TestTraceKVStoreGetStoreType(t *testing.T) {
-	memDB := dbadapter.Store{DB: dbm.NewMemDB()}
+	memDB := dbadapter.Store{DB: memdb.NewDB()}
 	store := newEmptyTraceKVStore(nil)
 	require.Equal(t, memDB.GetStoreType(), store.GetStoreType())
 }
diff --git a/store/transient/store.go b/store/transient/store.go
index 508cfd7e93..f8583fc1c5 100644
--- a/store/transient/store.go
+++ b/store/transient/store.go
@@ -1,7 +1,7 @@
 package transient
 
 import (
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 
 	"github.com/line/lbm-sdk/v2/store/dbadapter"
 	"github.com/line/lbm-sdk/v2/store/types"
@@ -17,13 +17,13 @@ type Store struct {
 
 // Constructs new MemDB adapter
 func NewStore() *Store {
-	return &Store{Store: dbadapter.Store{DB: dbm.NewMemDB()}}
+	return &Store{Store: dbadapter.Store{DB: memdb.NewDB()}}
 }
 
 // Implements CommitStore
 // Commit cleans up Store.
 func (ts *Store) Commit() (id types.CommitID) {
-	ts.Store = dbadapter.Store{DB: dbm.NewMemDB()}
+	ts.Store = dbadapter.Store{DB: memdb.NewDB()}
 	return
 }
 
diff --git a/store/types/iterator_test.go b/store/types/iterator_test.go
index bf18d6dddc..e38dfd5e22 100644
--- a/store/types/iterator_test.go
+++ b/store/types/iterator_test.go
@@ -3,15 +3,16 @@ package types_test
 import (
 	"testing"
 
-	dbm "github.com/line/tm-db/v2"
 	"github.com/stretchr/testify/require"
 
+	"github.com/line/tm-db/v2/memdb"
+
 	"github.com/line/lbm-sdk/v2/store/iavl"
 	"github.com/line/lbm-sdk/v2/store/types"
 )
 
 func newMemTestKVStore(t *testing.T) types.KVStore {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	store, err := iavl.LoadStore(db, types.CommitID{}, false)
 	require.NoError(t, err)
 	return store
diff --git a/store/types/store.go b/store/types/store.go
index 5a162eee65..cd8dfe2eae 100644
--- a/store/types/store.go
+++ b/store/types/store.go
@@ -6,7 +6,7 @@ import (
 
 	abci "github.com/line/ostracon/abci/types"
 	oststrings "github.com/line/ostracon/libs/strings"
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 
 	snapshottypes "github.com/line/lbm-sdk/v2/snapshots/types"
 	"github.com/line/lbm-sdk/v2/types/kv"
@@ -146,7 +146,7 @@ type CommitMultiStore interface {
 
 	// Mount a store of type using the given db.
 	// If db == nil, the new store will use the CommitMultiStore db.
-	MountStoreWithDB(key StoreKey, typ StoreType, db dbm.DB)
+	MountStoreWithDB(key StoreKey, typ StoreType, db tmdb.DB)
 
 	// Panics on a nil key.
 	GetCommitStore(key StoreKey) CommitStore
@@ -219,7 +219,7 @@ type KVStore interface {
 }
 
 // Iterator is an alias db's Iterator for convenience.
-type Iterator = dbm.Iterator
+type Iterator = tmdb.Iterator
 
 // CacheKVStore branches a KVStore and provides read cache functionality.
 // After calling .Write() on the CacheKVStore, all previously created
diff --git a/store/types/utils_test.go b/store/types/utils_test.go
index 1fab2c903b..206005d187 100644
--- a/store/types/utils_test.go
+++ b/store/types/utils_test.go
@@ -4,15 +4,16 @@ import (
 	"bytes"
 	"testing"
 
-	dbm "github.com/line/tm-db/v2"
 	"github.com/stretchr/testify/require"
 
+	"github.com/line/tm-db/v2/memdb"
+
 	"github.com/line/lbm-sdk/v2/store/rootmulti"
 	"github.com/line/lbm-sdk/v2/store/types"
 )
 
 func initTestStores(t *testing.T) (types.KVStore, types.KVStore) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	ms := rootmulti.NewStore(db)
 
 	key1 := types.NewKVStoreKey("store1")
diff --git a/tests/mocks/tendermint_tm_db_DB.go b/tests/mocks/tendermint_tm_db_DB.go
index fab3afd2d6..a08e7a5e65 100644
--- a/tests/mocks/tendermint_tm_db_DB.go
+++ b/tests/mocks/tendermint_tm_db_DB.go
@@ -6,7 +6,7 @@ package mocks
 
 import (
 	gomock "github.com/golang/mock/gomock"
-	db "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 	reflect "reflect"
 )
 
@@ -106,10 +106,10 @@ func (mr *MockDBMockRecorder) Has(arg0 interface{}) *gomock.Call {
 }
 
 // Iterator mocks base method
-func (m *MockDB) Iterator(arg0, arg1 []byte) (db.Iterator, error) {
+func (m *MockDB) Iterator(arg0, arg1 []byte) (tmdb.Iterator, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "Iterator", arg0, arg1)
-	ret0, _ := ret[0].(db.Iterator)
+	ret0, _ := ret[0].(tmdb.Iterator)
 	ret1, _ := ret[1].(error)
 	return ret0, ret1
 }
@@ -121,10 +121,10 @@ func (mr *MockDBMockRecorder) Iterator(arg0, arg1 interface{}) *gomock.Call {
 }
 
 // NewBatch mocks base method
-func (m *MockDB) NewBatch() db.Batch {
+func (m *MockDB) NewBatch() tmdb.Batch {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "NewBatch")
-	ret0, _ := ret[0].(db.Batch)
+	ret0, _ := ret[0].(tmdb.Batch)
 	return ret0
 }
 
@@ -149,10 +149,10 @@ func (mr *MockDBMockRecorder) Print() *gomock.Call {
 }
 
 // ReverseIterator mocks base method
-func (m *MockDB) ReverseIterator(arg0, arg1 []byte) (db.Iterator, error) {
+func (m *MockDB) ReverseIterator(arg0, arg1 []byte) (tmdb.Iterator, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "ReverseIterator", arg0, arg1)
-	ret0, _ := ret[0].(db.Iterator)
+	ret0, _ := ret[0].(tmdb.Iterator)
 	ret1, _ := ret[1].(error)
 	return ret0, ret1
 }
diff --git a/testutil/network/network.go b/testutil/network/network.go
index 1924b8e50c..0e6d30655d 100644
--- a/testutil/network/network.go
+++ b/testutil/network/network.go
@@ -20,7 +20,7 @@ import (
 	ostrand "github.com/line/ostracon/libs/rand"
 	"github.com/line/ostracon/node"
 	ostclient "github.com/line/ostracon/rpc/client"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/require"
 	"google.golang.org/grpc"
 
@@ -57,7 +57,7 @@ type AppConstructor = func(val Validator) servertypes.Application
 func NewAppConstructor(encodingCfg params.EncodingConfig) AppConstructor {
 	return func(val Validator) servertypes.Application {
 		return simapp.NewSimApp(
-			val.Ctx.Logger, dbm.NewMemDB(), nil, true, make(map[int64]bool), val.Ctx.Config.RootDir, 0,
+			val.Ctx.Logger, memdb.NewDB(), nil, true, make(map[int64]bool), val.Ctx.Config.RootDir, 0,
 			encodingCfg,
 			simapp.EmptyAppOptions{},
 			baseapp.SetPruning(storetypes.NewPruningOptionsFromString(val.AppConfig.Pruning)),
diff --git a/types/context_test.go b/types/context_test.go
index 8c2e5b08c8..f223e2a6d8 100644
--- a/types/context_test.go
+++ b/types/context_test.go
@@ -9,7 +9,7 @@ import (
 	abci "github.com/line/ostracon/abci/types"
 	"github.com/line/ostracon/libs/log"
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/suite"
 
 	"github.com/line/lbm-sdk/v2/crypto/keys/secp256k1"
@@ -27,7 +27,7 @@ func TestContextTestSuite(t *testing.T) {
 }
 
 func (s *contextTestSuite) defaultContext(key types.StoreKey) types.Context {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	cms := store.NewCommitMultiStore(db)
 	cms.MountStoreWithDB(key, types.StoreTypeIAVL, db)
 	s.Require().NoError(cms.LoadLatestVersion())
diff --git a/types/query/pagination_test.go b/types/query/pagination_test.go
index 944692ba67..a29183eb6f 100644
--- a/types/query/pagination_test.go
+++ b/types/query/pagination_test.go
@@ -8,7 +8,7 @@ import (
 	"github.com/stretchr/testify/suite"
 
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 
 	"github.com/line/lbm-sdk/v2/baseapp"
 	"github.com/line/lbm-sdk/v2/codec"
@@ -216,7 +216,7 @@ func setupTest() (*simapp.SimApp, sdk.Context, codec.Marshaler) {
 	ctx := app.BaseApp.NewContext(false, ostproto.Header{Height: 1})
 	appCodec := app.AppCodec()
 
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	ms := store.NewCommitMultiStore(db)
 
 	ms.LoadLatestVersion()
diff --git a/types/store_test.go b/types/store_test.go
index f4334c81ec..970ba64a77 100644
--- a/types/store_test.go
+++ b/types/store_test.go
@@ -3,9 +3,10 @@ package types_test
 import (
 	"testing"
 
-	dbm "github.com/line/tm-db/v2"
 	"github.com/stretchr/testify/suite"
 
+	"github.com/line/tm-db/v2/memdb"
+
 	"github.com/line/lbm-sdk/v2/store/rootmulti"
 	"github.com/line/lbm-sdk/v2/store/types"
 	sdk "github.com/line/lbm-sdk/v2/types"
@@ -112,7 +113,7 @@ func (s *storeTestSuite) TestDiffKVStores() {
 }
 
 func (s *storeTestSuite) initTestStores() (types.KVStore, types.KVStore) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	ms := rootmulti.NewStore(db)
 
 	key1 := types.NewKVStoreKey("store1")
diff --git a/types/utils.go b/types/utils.go
index 8fcae9ff74..7dfb27b3f2 100644
--- a/types/utils.go
+++ b/types/utils.go
@@ -6,18 +6,19 @@ import (
 	"fmt"
 	"time"
 
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/metadb"
 )
 
 var (
 	// This is set at compile time. Could be cleveldb, defaults is goleveldb.
 	DBBackend = ""
-	backend   = dbm.GoLevelDBBackend
+	backend   = metadb.GoLevelDBBackend
 )
 
 func init() {
 	if len(DBBackend) != 0 {
-		backend = dbm.BackendType(DBBackend)
+		backend = metadb.BackendType(DBBackend)
 	}
 }
 
@@ -85,14 +86,14 @@ func ParseTimeBytes(bz []byte) (time.Time, error) {
 }
 
 // NewLevelDB instantiate a new LevelDB instance according to DBBackend.
-func NewLevelDB(name, dir string) (db dbm.DB, err error) {
+func NewLevelDB(name, dir string) (db tmdb.DB, err error) {
 	defer func() {
 		if r := recover(); r != nil {
 			err = fmt.Errorf("couldn't create db: %v", r)
 		}
 	}()
 
-	return dbm.NewDB(name, backend, dir)
+	return metadb.NewDB(name, backend, dir)
 }
 
 // copy bytes
diff --git a/x/crisis/handler_test.go b/x/crisis/handler_test.go
index c1aa455ab8..28bc256536 100644
--- a/x/crisis/handler_test.go
+++ b/x/crisis/handler_test.go
@@ -6,7 +6,7 @@ import (
 
 	"github.com/line/ostracon/libs/log"
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/require"
 
 	"github.com/line/lbm-sdk/v2/simapp"
@@ -26,7 +26,7 @@ var (
 )
 
 func createTestApp() (*simapp.SimApp, sdk.Context, []sdk.AccAddress) {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	app := simapp.NewSimApp(log.NewNopLogger(), db, nil, true, map[int64]bool{}, simapp.DefaultNodeHome, 1, simapp.MakeTestEncodingConfig(), simapp.EmptyAppOptions{})
 	ctx := app.NewContext(true, ostproto.Header{})
 
diff --git a/x/gov/genesis_test.go b/x/gov/genesis_test.go
index 09a16dda11..722f53e202 100644
--- a/x/gov/genesis_test.go
+++ b/x/gov/genesis_test.go
@@ -7,7 +7,7 @@ import (
 	abci "github.com/line/ostracon/abci/types"
 	"github.com/line/ostracon/libs/log"
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/require"
 
 	"github.com/line/lbm-sdk/v2/simapp"
@@ -67,7 +67,7 @@ func TestImportExportQueues(t *testing.T) {
 		panic(err)
 	}
 
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	app2 := simapp.NewSimApp(log.NewNopLogger(), db, nil, true, map[int64]bool{}, simapp.DefaultNodeHome, 0, simapp.MakeTestEncodingConfig(), simapp.EmptyAppOptions{})
 
 	app2.InitChain(
diff --git a/x/ibc/core/03-connection/types/msgs_test.go b/x/ibc/core/03-connection/types/msgs_test.go
index a2b4837acf..4007740103 100644
--- a/x/ibc/core/03-connection/types/msgs_test.go
+++ b/x/ibc/core/03-connection/types/msgs_test.go
@@ -7,8 +7,7 @@ import (
 
 	"github.com/stretchr/testify/suite"
 
-	abci "github.com/line/ostracon/abci/types"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 
 	"github.com/line/lbm-sdk/v2/simapp"
 	"github.com/line/lbm-sdk/v2/store/iavl"
@@ -20,6 +19,7 @@ import (
 	commitmenttypes "github.com/line/lbm-sdk/v2/x/ibc/core/23-commitment/types"
 	ibctmtypes "github.com/line/lbm-sdk/v2/x/ibc/light-clients/07-tendermint/types"
 	ibctesting "github.com/line/lbm-sdk/v2/x/ibc/testing"
+	abci "github.com/line/ostracon/abci/types"
 )
 
 var (
@@ -45,7 +45,7 @@ func (suite *MsgTestSuite) SetupTest() {
 	suite.chainB = suite.coordinator.GetChain(ibctesting.GetChainID(1))
 
 	app := simapp.Setup(false)
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	store := rootmulti.NewStore(db)
 	storeKey := storetypes.NewKVStoreKey("iavlStoreKey")
 
diff --git a/x/ibc/core/04-channel/keeper/keeper.go b/x/ibc/core/04-channel/keeper/keeper.go
index 75d069db40..96ec1b945b 100644
--- a/x/ibc/core/04-channel/keeper/keeper.go
+++ b/x/ibc/core/04-channel/keeper/keeper.go
@@ -5,7 +5,7 @@ import (
 	"strings"
 
 	"github.com/line/ostracon/libs/log"
-	db "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
 
 	"github.com/line/lbm-sdk/v2/codec"
 	sdk "github.com/line/lbm-sdk/v2/types"
@@ -222,7 +222,7 @@ func (k Keeper) HasPacketAcknowledgement(ctx sdk.Context, portID, channelID stri
 // IteratePacketSequence provides an iterator over all send, receive or ack sequences.
 // For each sequence, cb will be called. If the cb returns true, the iterator
 // will close and stop.
-func (k Keeper) IteratePacketSequence(ctx sdk.Context, iterator db.Iterator, cb func(portID, channelID string, sequence uint64) bool) {
+func (k Keeper) IteratePacketSequence(ctx sdk.Context, iterator tmdb.Iterator, cb func(portID, channelID string, sequence uint64) bool) {
 	defer iterator.Close()
 	for ; iterator.Valid(); iterator.Next() {
 		portID, channelID, err := host.ParseChannelPath(string(iterator.Key()))
@@ -412,7 +412,7 @@ func (k Keeper) LookupModuleByChannel(ctx sdk.Context, portID, channelID string)
 }
 
 // common functionality for IteratePacketCommitment and IteratePacketAcknowledgement
-func (k Keeper) iterateHashes(_ sdk.Context, iterator db.Iterator, cb func(portID, channelID string, sequence uint64, hash []byte) bool) {
+func (k Keeper) iterateHashes(_ sdk.Context, iterator tmdb.Iterator, cb func(portID, channelID string, sequence uint64, hash []byte) bool) {
 	defer iterator.Close()
 
 	for ; iterator.Valid(); iterator.Next() {
diff --git a/x/ibc/core/04-channel/types/msgs_test.go b/x/ibc/core/04-channel/types/msgs_test.go
index 26d685083b..90607e366b 100644
--- a/x/ibc/core/04-channel/types/msgs_test.go
+++ b/x/ibc/core/04-channel/types/msgs_test.go
@@ -6,8 +6,7 @@ import (
 
 	"github.com/stretchr/testify/suite"
 
-	abci "github.com/line/ostracon/abci/types"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 
 	"github.com/line/lbm-sdk/v2/simapp"
 	"github.com/line/lbm-sdk/v2/store/iavl"
@@ -18,6 +17,7 @@ import (
 	"github.com/line/lbm-sdk/v2/x/ibc/core/04-channel/types"
 	commitmenttypes "github.com/line/lbm-sdk/v2/x/ibc/core/23-commitment/types"
 	"github.com/line/lbm-sdk/v2/x/ibc/core/exported"
+	abci "github.com/line/ostracon/abci/types"
 )
 
 const (
@@ -76,7 +76,7 @@ type TypesTestSuite struct {
 
 func (suite *TypesTestSuite) SetupTest() {
 	app := simapp.Setup(false)
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	store := rootmulti.NewStore(db)
 	storeKey := storetypes.NewKVStoreKey("iavlStoreKey")
 
diff --git a/x/ibc/core/23-commitment/types/commitment_test.go b/x/ibc/core/23-commitment/types/commitment_test.go
index f4611311f5..fc84e7c0fa 100644
--- a/x/ibc/core/23-commitment/types/commitment_test.go
+++ b/x/ibc/core/23-commitment/types/commitment_test.go
@@ -5,11 +5,11 @@ import (
 
 	"github.com/stretchr/testify/suite"
 
+	"github.com/line/tm-db/v2/memdb"
+
 	"github.com/line/lbm-sdk/v2/store/iavl"
 	"github.com/line/lbm-sdk/v2/store/rootmulti"
 	storetypes "github.com/line/lbm-sdk/v2/store/types"
-
-	dbm "github.com/line/tm-db/v2"
 )
 
 type MerkleTestSuite struct {
@@ -21,7 +21,7 @@ type MerkleTestSuite struct {
 }
 
 func (suite *MerkleTestSuite) SetupTest() {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	suite.store = rootmulti.NewStore(db)
 
 	suite.storeKey = storetypes.NewKVStoreKey("iavlStoreKey")
diff --git a/x/params/keeper/common_test.go b/x/params/keeper/common_test.go
index d34dffdf19..cb45cd6269 100644
--- a/x/params/keeper/common_test.go
+++ b/x/params/keeper/common_test.go
@@ -3,7 +3,7 @@ package keeper_test
 import (
 	"github.com/line/ostracon/libs/log"
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 
 	"github.com/line/lbm-sdk/v2/simapp"
 
@@ -39,7 +39,7 @@ func createTestCodec() *codec.LegacyAmino {
 }
 
 func defaultContext(key sdk.StoreKey, tkey sdk.StoreKey) sdk.Context {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	cms := store.NewCommitMultiStore(db)
 	cms.MountStoreWithDB(key, sdk.StoreTypeIAVL, db)
 	cms.MountStoreWithDB(tkey, sdk.StoreTypeTransient, db)
diff --git a/x/params/proposal_handler_test.go b/x/params/proposal_handler_test.go
index 16caefbfab..a84c9b8dcb 100644
--- a/x/params/proposal_handler_test.go
+++ b/x/params/proposal_handler_test.go
@@ -7,7 +7,7 @@ import (
 
 	"github.com/line/ostracon/libs/log"
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/require"
 
 	"github.com/line/lbm-sdk/v2/codec"
@@ -64,7 +64,7 @@ func newTestInput(t *testing.T) testInput {
 	cdc := codec.NewLegacyAmino()
 	proposal.RegisterLegacyAminoCodec(cdc)
 
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	cms := store.NewCommitMultiStore(db)
 
 	keyParams := sdk.NewKVStoreKey("params")
diff --git a/x/params/types/subspace_test.go b/x/params/types/subspace_test.go
index 988c240cec..018c2d518a 100644
--- a/x/params/types/subspace_test.go
+++ b/x/params/types/subspace_test.go
@@ -7,7 +7,7 @@ import (
 
 	"github.com/line/ostracon/libs/log"
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/suite"
 
 	"github.com/line/lbm-sdk/v2/codec"
@@ -27,7 +27,7 @@ type SubspaceTestSuite struct {
 }
 
 func (suite *SubspaceTestSuite) SetupTest() {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 
 	ms := store.NewCommitMultiStore(db)
 	ms.MountStoreWithDB(key, sdk.StoreTypeIAVL, db)
diff --git a/x/upgrade/abci_test.go b/x/upgrade/abci_test.go
index 17f9c7cc54..8095dd4aee 100644
--- a/x/upgrade/abci_test.go
+++ b/x/upgrade/abci_test.go
@@ -12,7 +12,7 @@ import (
 	abci "github.com/line/ostracon/abci/types"
 	"github.com/line/ostracon/libs/log"
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/require"
 
 	"github.com/line/lbm-sdk/v2/simapp"
@@ -39,7 +39,7 @@ type TestSuite struct {
 var s TestSuite
 
 func setupTest(height int64, skip map[int64]bool) TestSuite {
-	db := dbm.NewMemDB()
+	db := memdb.NewDB()
 	app := simapp.NewSimApp(log.NewNopLogger(), db, nil, true, skip, simapp.DefaultNodeHome, 0, simapp.MakeTestEncodingConfig(), simapp.EmptyAppOptions{})
 	genesisState := simapp.NewDefaultGenesisState(app.AppCodec())
 	stateBytes, err := json.MarshalIndent(genesisState, "", "  ")
diff --git a/x/upgrade/types/storeloader_test.go b/x/upgrade/types/storeloader_test.go
index b81272e5ff..325e27d82d 100644
--- a/x/upgrade/types/storeloader_test.go
+++ b/x/upgrade/types/storeloader_test.go
@@ -10,7 +10,8 @@ import (
 	abci "github.com/line/ostracon/abci/types"
 	"github.com/line/ostracon/libs/log"
 	ostproto "github.com/line/ostracon/proto/ostracon/types"
-	dbm "github.com/line/tm-db/v2"
+	tmdb "github.com/line/tm-db/v2"
+	"github.com/line/tm-db/v2/memdb"
 	"github.com/stretchr/testify/require"
 
 	"github.com/line/lbm-sdk/v2/baseapp"
@@ -29,7 +30,7 @@ func defaultLogger() log.Logger {
 	return log.NewTMLogger(log.NewSyncWriter(os.Stdout)).With("module", "sdk/app")
 }
 
-func initStore(t *testing.T, db dbm.DB, storeKey string, k, v []byte) {
+func initStore(t *testing.T, db tmdb.DB, storeKey string, k, v []byte) {
 	rs := rootmulti.NewStore(db)
 	rs.SetPruning(store.PruneNothing)
 	key := sdk.NewKVStoreKey(storeKey)
@@ -46,7 +47,7 @@ func initStore(t *testing.T, db dbm.DB, storeKey string, k, v []byte) {
 	require.Equal(t, int64(1), commitID.Version)
 }
 
-func checkStore(t *testing.T, db dbm.DB, ver int64, storeKey string, k, v []byte) {
+func checkStore(t *testing.T, db tmdb.DB, ver int64, storeKey string, k, v []byte) {
 	rs := rootmulti.NewStore(db)
 	rs.SetPruning(store.PruneNothing)
 	key := sdk.NewKVStoreKey(storeKey)
@@ -112,7 +113,7 @@ func TestSetLoader(t *testing.T) {
 		tc := tc
 		t.Run(name, func(t *testing.T) {
 			// prepare a db with some data
-			db := dbm.NewMemDB()
+			db := memdb.NewDB()
 
 			initStore(t, db, tc.origStoreKey, k, v)