diff --git a/bsc/rlp/encode_test.go b/bsc/rlp/encode_test.go
index b4b9e5128..f32a23964 100644
--- a/bsc/rlp/encode_test.go
+++ b/bsc/rlp/encode_test.go
@@ -21,7 +21,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"math/big"
 	"sync"
 	"testing"
@@ -349,7 +348,7 @@ func TestEncodeToReader(t *testing.T) {
 		if err != nil {
 			return nil, err
 		}
-		return ioutil.ReadAll(r)
+		return io.ReadAll(r)
 	})
 }
 
@@ -390,7 +389,7 @@ func TestEncodeToReaderReturnToPool(t *testing.T) {
 		go func() {
 			for i := 0; i < 1000; i++ {
 				_, r, _ := EncodeToReader("foo")
-				ioutil.ReadAll(r)
+				io.ReadAll(r)
 				r.Read(buf)
 				r.Read(buf)
 				r.Read(buf)
diff --git a/client/config.go b/client/config.go
index a1d38a016..445abd843 100644
--- a/client/config.go
+++ b/client/config.go
@@ -7,7 +7,6 @@ import (
 	"github.com/mitchellh/go-homedir"
 	"github.com/pelletier/go-toml"
 	"github.com/spf13/cobra"
-	"io/ioutil"
 	"os"
 	"path"
 )
@@ -127,5 +126,5 @@ func createGaiaCLIConfig(cfg *cliConfig) error {
 		}
 	}
 
-	return ioutil.WriteFile(cfgFile, data, os.ModePerm)
+	return os.WriteFile(cfgFile, data, os.ModePerm)
 }
diff --git a/client/keys/add.go b/client/keys/add.go
index b6aa177e6..67b86f187 100644
--- a/client/keys/add.go
+++ b/client/keys/add.go
@@ -4,7 +4,7 @@ import (
 	"encoding/hex"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"os"
 	"path"
@@ -225,7 +225,7 @@ func AddNewKeyRequestHandler(indent bool) http.HandlerFunc {
 			return
 		}
 
-		body, err := ioutil.ReadAll(r.Body)
+		body, err := io.ReadAll(r.Body)
 		if err != nil {
 			w.WriteHeader(http.StatusBadRequest)
 			w.Write([]byte(err.Error()))
@@ -323,7 +323,7 @@ func RecoverRequestHandler(indent bool) http.HandlerFunc {
 		vars := mux.Vars(r)
 		name := vars["name"]
 		var m RecoverKeyBody
-		body, err := ioutil.ReadAll(r.Body)
+		body, err := io.ReadAll(r.Body)
 		if err != nil {
 			w.WriteHeader(http.StatusBadRequest)
 			w.Write([]byte(err.Error()))
diff --git a/client/keys/utils_test.go b/client/keys/utils_test.go
index 6b65bb55a..53c3264a7 100644
--- a/client/keys/utils_test.go
+++ b/client/keys/utils_test.go
@@ -3,13 +3,12 @@ package keys
 import (
 	"github.com/cosmos/cosmos-sdk/crypto/keys"
 	"github.com/stretchr/testify/require"
-	"io/ioutil"
 	"os"
 	"testing"
 )
 
 func TestGetKeyBaseLocks(t *testing.T) {
-	dir, err := ioutil.TempDir("", "cosmos-sdk-keys")
+	dir, err := os.MkdirTemp("", "cosmos-sdk-keys")
 	require.Nil(t, err)
 	defer os.RemoveAll(dir)
 
diff --git a/client/lcd/certificates.go b/client/lcd/certificates.go
index 1516ed35a..b75b33831 100644
--- a/client/lcd/certificates.go
+++ b/client/lcd/certificates.go
@@ -11,7 +11,7 @@ import (
 	"encoding/pem"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"math/big"
 	"net"
 	"os"
@@ -76,7 +76,7 @@ func writeCertAndPrivKey(certBytes []byte, priv *ecdsa.PrivateKey) (certFile str
 }
 
 func writeCertificateFile(certBytes []byte) (filename string, err error) {
-	f, err := ioutil.TempFile("", "cert_")
+	f, err := os.CreateTemp("", "cert_")
 	if err != nil {
 		return
 	}
@@ -89,7 +89,7 @@ func writeCertificateFile(certBytes []byte) (filename string, err error) {
 }
 
 func writeKeyFile(priv *ecdsa.PrivateKey) (filename string, err error) {
-	f, err := ioutil.TempFile("", "key_")
+	f, err := os.CreateTemp("", "key_")
 	if err != nil {
 		return
 	}
@@ -162,7 +162,7 @@ func fingerprintFromFile(certFile string) (string, error) {
 		return "", err
 	}
 	defer f.Close()
-	data, err := ioutil.ReadAll(f)
+	data, err := io.ReadAll(f)
 	if err != nil {
 		return "", err
 	}
diff --git a/client/lcd/certificates_test.go b/client/lcd/certificates_test.go
index 14bddfa0f..b66aaccaa 100644
--- a/client/lcd/certificates_test.go
+++ b/client/lcd/certificates_test.go
@@ -3,7 +3,6 @@ package lcd
 import (
 	"crypto/ecdsa"
 	"crypto/x509"
-	"io/ioutil"
 	"os"
 	"testing"
 
@@ -71,7 +70,7 @@ zj0EAwIDSQAwRgIhAKnwbhX9FrGG1otCVLwhClQ3RaLxnNpCgIGTqSimb34cAiEA
 stMN+IqMCKWlZyGqxGIiyksMLMEU3lRqKNQn2EoAZJY=
 -----END CERTIFICATE-----`
 	wantFingerprint := `SHA256 Fingerprint=0B:ED:9A:AA:A2:D1:7E:B2:53:56:F6:FC:C0:E6:1A:69:70:21:A2:B0:90:FC:AF:BB:EF:AE:2C:78:52:AB:68:40`
-	certFile, err := ioutil.TempFile("", "test_cert_")
+	certFile, err := os.CreateTemp("", "test_cert_")
 	require.Nil(t, err)
 	_, err = certFile.Write([]byte(cert))
 	require.Nil(t, err)
@@ -83,7 +82,7 @@ stMN+IqMCKWlZyGqxGIiyksMLMEU3lRqKNQn2EoAZJY=
 	require.Equal(t, wantFingerprint, fingerprint)
 
 	// test failure
-	emptyFile, err := ioutil.TempFile("", "test_cert_")
+	emptyFile, err := os.CreateTemp("", "test_cert_")
 	require.Nil(t, err)
 	err = emptyFile.Close()
 	require.Nil(t, err)
diff --git a/client/lcd/test_helpers.go b/client/lcd/test_helpers.go
index b4277f2a8..c2bf3e895 100644
--- a/client/lcd/test_helpers.go
+++ b/client/lcd/test_helpers.go
@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net"
 	"net/http"
 	"os"
@@ -87,7 +87,7 @@ func GetConfig() *tmcfg.Config {
 // NOTE: memDB cannot be used because the request is expecting to interact with
 // the default location.
 func GetKeyBase(t *testing.T) crkeys.Keybase {
-	dir, err := ioutil.TempDir("", "lcd_test")
+	dir, err := os.MkdirTemp("", "lcd_test")
 	require.NoError(t, err)
 
 	viper.Set(cli.HomeFlag, dir)
@@ -265,7 +265,7 @@ func InitializeTestLCD(
 	viper.Set(client.FlagNode, config.RPC.ListenAddress)
 	viper.Set(client.FlagChainID, genDoc.ChainID)
 	viper.Set(client.FlagTrustNode, false)
-	dir, err := ioutil.TempDir("", "lcd_test")
+	dir, err := os.MkdirTemp("", "lcd_test")
 	require.NoError(t, err)
 	viper.Set(cli.HomeFlag, dir)
 
@@ -358,7 +358,7 @@ func Request(t *testing.T, port, method, path string, payload []byte) (*http.Res
 	res, err = http.DefaultClient.Do(req)
 	require.Nil(t, err)
 
-	output, err := ioutil.ReadAll(res.Body)
+	output, err := io.ReadAll(res.Body)
 	res.Body.Close()
 	require.Nil(t, err)
 
diff --git a/client/tx/broadcast.go b/client/tx/broadcast.go
index 8346e1538..18ce48523 100644
--- a/client/tx/broadcast.go
+++ b/client/tx/broadcast.go
@@ -1,12 +1,12 @@
 package tx
 
 import (
+	"io"
 	"net/http"
 
 	"github.com/cosmos/cosmos-sdk/client/context"
 	"github.com/cosmos/cosmos-sdk/client/utils"
 	"github.com/cosmos/cosmos-sdk/codec"
-	"io/ioutil"
 )
 
 const (
@@ -29,7 +29,7 @@ type BroadcastBody struct {
 func BroadcastTxRequest(cliCtx context.CLIContext, cdc *codec.Codec) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		var m BroadcastBody
-		body, err := ioutil.ReadAll(r.Body)
+		body, err := io.ReadAll(r.Body)
 		if err != nil {
 			utils.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
 			return
diff --git a/client/utils/rest.go b/client/utils/rest.go
index 8ee854c19..b3deace88 100644
--- a/client/utils/rest.go
+++ b/client/utils/rest.go
@@ -2,7 +2,7 @@ package utils
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"strconv"
@@ -135,7 +135,7 @@ unmarshals to the req interface.
     err := ReadRESTReq(w, r, cdc, req)
 */
 func ReadRESTReq(w http.ResponseWriter, r *http.Request, cdc *codec.Codec, req interface{}) error {
-	body, err := ioutil.ReadAll(r.Body)
+	body, err := io.ReadAll(r.Body)
 	if err != nil {
 		WriteErrorResponse(w, http.StatusBadRequest, err.Error())
 		return err
diff --git a/cmd/cosmos-sdk-cli/cmd/init.go b/cmd/cosmos-sdk-cli/cmd/init.go
index e9e9cd8a9..0c7c2ddc9 100644
--- a/cmd/cosmos-sdk-cli/cmd/init.go
+++ b/cmd/cosmos-sdk-cli/cmd/init.go
@@ -3,7 +3,6 @@ package cmd
 import (
 	"fmt"
 	"go/build"
-	"io/ioutil"
 	"os"
 	"strings"
 
@@ -65,7 +64,7 @@ func copyBasecoinTemplate(projectName string, projectPath string, remoteProjectP
 	basecoinProjectPath := resolveProjectPath(remoteBasecoinPath)
 	filepath.Walk(basecoinProjectPath, func(path string, f os.FileInfo, err error) error {
 		if !f.IsDir() {
-			data, err := ioutil.ReadFile(path)
+			data, err := os.ReadFile(path)
 			if err != nil {
 				return err
 			}
@@ -83,7 +82,7 @@ func copyBasecoinTemplate(projectName string, projectPath string, remoteProjectP
 			fmt.Println("Creating " + projectFilePath)
 			// Writing the contents to a file in the project folder
 			contents = replacer.Replace(contents)
-			ioutil.WriteFile(projectFilePath, []byte(contents), os.ModePerm)
+			os.WriteFile(projectFilePath, []byte(contents), os.ModePerm)
 		}
 		return nil
 	})
@@ -110,7 +109,7 @@ func createGopkg(projectPath string) {
 		contents += "[[override]]\n\tname = \"" + dependency + "\"\n\tversion = \"=" + version + "\"\n\n"
 	}
 	contents += "[prune]\n\tgo-tests = true\n\tunused-packages = true"
-	ioutil.WriteFile(projectPath+"/Gopkg.toml", []byte(contents), os.ModePerm)
+	os.WriteFile(projectPath+"/Gopkg.toml", []byte(contents), os.ModePerm)
 }
 
 // nolint: errcheck
@@ -142,7 +141,7 @@ benchmark:
 	// Replacing instances of base* to project specific names
 	makefileContents = replacer.Replace(makefileContents)
 
-	ioutil.WriteFile(projectPath+"/Makefile", []byte(makefileContents), os.ModePerm)
+	os.WriteFile(projectPath+"/Makefile", []byte(makefileContents), os.ModePerm)
 
 }
 
diff --git a/cmd/gaia/app/genesis.go b/cmd/gaia/app/genesis.go
index bd9b65e0d..7ded70ae4 100644
--- a/cmd/gaia/app/genesis.go
+++ b/cmd/gaia/app/genesis.go
@@ -4,7 +4,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"sort"
@@ -189,8 +188,8 @@ func GaiaAppGenStateJSON(cdc *codec.Codec, appGenTxs []json.RawMessage) (appStat
 // appGenTxs, and persistent peers required to generate genesis.json.
 func CollectStdTxs(moniker string, genTxsDir string, cdc *codec.Codec) (
 	validators []tmtypes.GenesisValidator, appGenTxs []auth.StdTx, persistentPeers string, err error) {
-	var fos []os.FileInfo
-	fos, err = ioutil.ReadDir(genTxsDir)
+	var fos []os.DirEntry
+	fos, err = os.ReadDir(genTxsDir)
 	if err != nil {
 		return
 	}
@@ -204,7 +203,7 @@ func CollectStdTxs(moniker string, genTxsDir string, cdc *codec.Codec) (
 
 		// get the genStdTx
 		var jsonRawTx []byte
-		jsonRawTx, err = ioutil.ReadFile(filename)
+		jsonRawTx, err = os.ReadFile(filename)
 		if err != nil {
 			return
 		}
diff --git a/cmd/gaia/cli_test/cli_test.go b/cmd/gaia/cli_test/cli_test.go
index 1c196aae4..e6cebd968 100644
--- a/cmd/gaia/cli_test/cli_test.go
+++ b/cmd/gaia/cli_test/cli_test.go
@@ -1,3 +1,4 @@
+//go:build cli_test
 // +build cli_test
 
 package clitest
@@ -5,7 +6,6 @@ package clitest
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path"
 	"testing"
@@ -391,7 +391,7 @@ func TestGaiaCLIConfig(t *testing.T) {
 	node := fmt.Sprintf("%s:%s", servAddr, port)
 	chainID := executeInit(t, fmt.Sprintf("gaiad init -o --name=foo --home=%s --home-client=%s", gaiadHome, gaiacliHome))
 	executeWrite(t, fmt.Sprintf("gaiacli --home=%s config", gaiadHome), gaiacliHome, node, "y")
-	config, err := ioutil.ReadFile(path.Join(gaiacliHome, "config", "config.toml"))
+	config, err := os.ReadFile(path.Join(gaiacliHome, "config", "config.toml"))
 	require.NoError(t, err)
 	expectedConfig := fmt.Sprintf(`chain_id = "%s"
 encoding = "btc"
@@ -404,7 +404,7 @@ trust_node = true
 	require.Equal(t, expectedConfig, string(config))
 	// ensure a backup gets created
 	executeWrite(t, "gaiacli config", gaiacliHome, node, "y", "y")
-	configBackup, err := ioutil.ReadFile(path.Join(gaiacliHome, "config", "config.toml-old"))
+	configBackup, err := os.ReadFile(path.Join(gaiacliHome, "config", "config.toml-old"))
 	require.NoError(t, err)
 	require.Equal(t, expectedConfig, string(configBackup))
 
@@ -420,7 +420,7 @@ output = "text"
 trace = false
 trust_node = true
 `, gaiacliHome, node)
-	config, err = ioutil.ReadFile(path.Join(gaiacliHome, "config", "config.toml"))
+	config, err = os.ReadFile(path.Join(gaiacliHome, "config", "config.toml"))
 	require.NoError(t, err)
 	require.Equal(t, expectedConfig, string(config))
 }
@@ -456,7 +456,7 @@ func unmarshalStdTx(t *testing.T, s string) (stdTx auth.StdTx) {
 }
 
 func writeToNewTempFile(t *testing.T, s string) *os.File {
-	fp, err := ioutil.TempFile(os.TempDir(), "cosmos_cli_test_")
+	fp, err := os.TempFile(os.TempDir(), "cosmos_cli_test_")
 	require.Nil(t, err)
 	_, err = fp.WriteString(s)
 	require.Nil(t, err)
diff --git a/cmd/gaia/init/gentx.go b/cmd/gaia/init/gentx.go
index 1b24a3576..c51208500 100644
--- a/cmd/gaia/init/gentx.go
+++ b/cmd/gaia/init/gentx.go
@@ -15,7 +15,6 @@ import (
 	"github.com/tendermint/tendermint/crypto"
 	tmcli "github.com/tendermint/tendermint/libs/cli"
 	"github.com/tendermint/tendermint/libs/common"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 )
@@ -60,7 +59,7 @@ following delegation and commission default parameters:
 			prepareFlagsForTxCreateValidator(config, nodeID, ip, valPubKey)
 			createValidatorCmd := cli.GetCmdCreateValidator(cdc)
 
-			w, err := ioutil.TempFile("", "gentx")
+			w, err := os.CreateTemp("", "gentx")
 			if err != nil {
 				return err
 			}
diff --git a/cmd/gaia/init/init_test.go b/cmd/gaia/init/init_test.go
index 48a5d9247..ea2878b12 100644
--- a/cmd/gaia/init/init_test.go
+++ b/cmd/gaia/init/init_test.go
@@ -6,7 +6,6 @@ import (
 	"github.com/cosmos/cosmos-sdk/cmd/gaia/app"
 	"github.com/tendermint/tendermint/libs/cli"
 	"io"
-	"io/ioutil"
 	"os"
 	"testing"
 	"time"
@@ -39,7 +38,7 @@ func TestInitCmd(t *testing.T) {
 }
 
 func setupClientHome(t *testing.T) func() {
-	clientDir, err := ioutil.TempDir("", "mock-sdk-cmd")
+	clientDir, err := os.MkdirTemp("", "mock-sdk-cmd")
 	require.Nil(t, err)
 	viper.Set(flagClientHome, clientDir)
 	viper.Set(flagOverwriteKey, true)
@@ -92,7 +91,7 @@ func TestEmptyState(t *testing.T) {
 }
 
 func TestStartStandAlone(t *testing.T) {
-	home, err := ioutil.TempDir("", "mock-sdk-cmd")
+	home, err := os.MkdirTemp("", "mock-sdk-cmd")
 	require.Nil(t, err)
 	defer func() {
 		os.RemoveAll(home)
@@ -130,7 +129,7 @@ func TestStartStandAlone(t *testing.T) {
 }
 
 func TestInitNodeValidatorFiles(t *testing.T) {
-	home, err := ioutil.TempDir("", "mock-sdk-cmd")
+	home, err := os.MkdirTemp("", "mock-sdk-cmd")
 	require.Nil(t, err)
 	defer func() {
 		os.RemoveAll(home)
diff --git a/go.mod b/go.mod
index 60467baab..5a2a1ceaf 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/cosmos/cosmos-sdk
 
-go 1.16
+go 1.17
 
 require (
 	github.com/bartekn/go-bip39 v0.0.0-20171116152956-a05967ea095d
@@ -32,10 +32,118 @@ require (
 	golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550
 )
 
+require (
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/btcsuite/btcutil v0.0.0-20190425235716-9e5f4b9a998d // indirect
+	github.com/coreos/go-semver v0.3.0 // indirect
+	github.com/cosmos/ledger-go v0.9.2 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/etcd-io/bbolt v1.3.3 // indirect
+	github.com/fsnotify/fsnotify v1.4.7 // indirect
+	github.com/go-logfmt/logfmt v0.4.0 // indirect
+	github.com/gogo/protobuf v1.3.1 // indirect
+	github.com/golang/protobuf v1.3.2 // indirect
+	github.com/golang/snappy v0.0.1 // indirect
+	github.com/google/uuid v1.1.1 // indirect
+	github.com/gorilla/websocket v1.4.0 // indirect
+	github.com/hashicorp/errwrap v1.0.0 // indirect
+	github.com/hashicorp/go-multierror v1.0.0 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/huin/goupnp v1.0.0 // indirect
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/ipfs/go-cid v0.0.3 // indirect
+	github.com/ipfs/go-datastore v0.0.5 // indirect
+	github.com/ipfs/go-ipfs-util v0.0.1 // indirect
+	github.com/ipfs/go-todocounter v0.0.1 // indirect
+	github.com/jackpal/gateway v1.0.5 // indirect
+	github.com/jackpal/go-nat-pmp v1.0.1 // indirect
+	github.com/jbenet/go-temp-err-catcher v0.0.0-20150120210811-aac704a3f4f2 // indirect
+	github.com/jbenet/goprocess v0.1.3 // indirect
+	github.com/jmhodges/levigo v1.0.0 // indirect
+	github.com/koron/go-ssdp v0.0.0-20180514024734-4a0ed625a78b // indirect
+	github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515 // indirect
+	github.com/libp2p/go-addr-util v0.0.1 // indirect
+	github.com/libp2p/go-buffer-pool v0.0.2 // indirect
+	github.com/libp2p/go-conn-security-multistream v0.1.0 // indirect
+	github.com/libp2p/go-eventbus v0.1.0 // indirect
+	github.com/libp2p/go-flow-metrics v0.0.1 // indirect
+	github.com/libp2p/go-libp2p v0.3.0 // indirect
+	github.com/libp2p/go-libp2p-autonat v0.1.0 // indirect
+	github.com/libp2p/go-libp2p-circuit v0.1.1 // indirect
+	github.com/libp2p/go-libp2p-core v0.2.2 // indirect
+	github.com/libp2p/go-libp2p-discovery v0.1.0 // indirect
+	github.com/libp2p/go-libp2p-kad-dht v0.2.0 // indirect
+	github.com/libp2p/go-libp2p-kbucket v0.2.0 // indirect
+	github.com/libp2p/go-libp2p-loggables v0.1.0 // indirect
+	github.com/libp2p/go-libp2p-mplex v0.2.1 // indirect
+	github.com/libp2p/go-libp2p-nat v0.0.4 // indirect
+	github.com/libp2p/go-libp2p-peerstore v0.1.3 // indirect
+	github.com/libp2p/go-libp2p-record v0.1.1 // indirect
+	github.com/libp2p/go-libp2p-routing v0.1.0 // indirect
+	github.com/libp2p/go-libp2p-secio v0.2.0 // indirect
+	github.com/libp2p/go-libp2p-swarm v0.2.0 // indirect
+	github.com/libp2p/go-libp2p-transport-upgrader v0.1.1 // indirect
+	github.com/libp2p/go-libp2p-yamux v0.2.1 // indirect
+	github.com/libp2p/go-maddr-filter v0.0.5 // indirect
+	github.com/libp2p/go-mplex v0.1.0 // indirect
+	github.com/libp2p/go-msgio v0.0.4 // indirect
+	github.com/libp2p/go-nat v0.0.3 // indirect
+	github.com/libp2p/go-openssl v0.0.2 // indirect
+	github.com/libp2p/go-reuseport v0.0.1 // indirect
+	github.com/libp2p/go-reuseport-transport v0.0.2 // indirect
+	github.com/libp2p/go-stream-muxer-multistream v0.2.0 // indirect
+	github.com/libp2p/go-tcp-transport v0.1.0 // indirect
+	github.com/libp2p/go-ws-transport v0.1.0 // indirect
+	github.com/libp2p/go-yamux v1.2.3 // indirect
+	github.com/magiconair/properties v1.8.1 // indirect
+	github.com/mattn/go-colorable v0.1.4 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/minio/blake2b-simd v0.0.0-20160723061019-3f5f724cb5b1 // indirect
+	github.com/minio/sha256-simd v0.1.0 // indirect
+	github.com/mitchellh/mapstructure v1.1.2 // indirect
+	github.com/mr-tron/base58 v1.1.2 // indirect
+	github.com/multiformats/go-base32 v0.0.3 // indirect
+	github.com/multiformats/go-multiaddr v0.0.4 // indirect
+	github.com/multiformats/go-multiaddr-dns v0.0.3 // indirect
+	github.com/multiformats/go-multiaddr-fmt v0.0.1 // indirect
+	github.com/multiformats/go-multiaddr-net v0.0.1 // indirect
+	github.com/multiformats/go-multibase v0.0.1 // indirect
+	github.com/multiformats/go-multihash v0.0.7 // indirect
+	github.com/multiformats/go-multistream v0.1.0 // indirect
+	github.com/opentracing/opentracing-go v1.1.0 // indirect
+	github.com/otiai10/primes v0.0.0-20180210170552-f6d2a1ba97c4 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90 // indirect
+	github.com/prometheus/common v0.6.0 // indirect
+	github.com/prometheus/procfs v0.0.3 // indirect
+	github.com/rcrowley/go-metrics v0.0.0-20180503174638-e2704e165165 // indirect
+	github.com/rs/cors v1.6.0 // indirect
+	github.com/spacemonkeygo/spacelog v0.0.0-20180420211403-2296661a0572 // indirect
+	github.com/spaolacci/murmur3 v1.1.0 // indirect
+	github.com/spf13/afero v1.2.2 // indirect
+	github.com/spf13/cast v1.3.0 // indirect
+	github.com/spf13/jwalterweatherman v1.1.0 // indirect
+	github.com/whyrusleeping/base32 v0.0.0-20170828182744-c30ac30633cc // indirect
+	github.com/whyrusleeping/go-keyspace v0.0.0-20160322163242-5b898ac5add1 // indirect
+	github.com/whyrusleeping/go-logging v0.0.1 // indirect
+	github.com/whyrusleeping/go-notifier v0.0.0-20170827234753-097c5d47330f // indirect
+	github.com/whyrusleeping/mafmt v1.2.8 // indirect
+	github.com/whyrusleeping/multiaddr-filter v0.0.0-20160516205228-e903e4adabd7 // indirect
+	github.com/zondax/hid v0.9.0 // indirect
+	go.opencensus.io v0.22.0 // indirect
+	golang.org/x/net v0.0.0-20191021144547-ec77196f6094 // indirect
+	golang.org/x/sys v0.0.0-20191026070338-33540a1f6037 // indirect
+	golang.org/x/text v0.3.2 // indirect
+	golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898 // indirect
+	google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb // indirect
+	google.golang.org/grpc v1.23.0 // indirect
+	gopkg.in/yaml.v2 v2.2.4 // indirect
+)
+
 replace (
-	github.com/tendermint/go-amino => github.com/binance-chain/bnc-go-amino v0.14.1-binance.2
-	github.com/tendermint/iavl => github.com/binance-chain/bnc-tendermint-iavl v0.12.0-binance.4
-	github.com/tendermint/tendermint => github.com/binance-chain/bnc-tendermint v0.32.3-binance.6
-	github.com/zondax/ledger-cosmos-go => github.com/binance-chain/ledger-cosmos-go v0.9.9-binance.3
+	github.com/tendermint/go-amino => github.com/bnb-chain/bnc-go-amino v0.14.1-binance.2
+	github.com/tendermint/iavl => github.com/bnb-chain/bnc-tendermint-iavl v0.12.0-binance.4
+	github.com/tendermint/tendermint => github.com/bnb-chain/bnc-tendermint v0.32.3-binance.6
+	github.com/zondax/ledger-cosmos-go => github.com/bnb-chain/ledger-cosmos-go v0.9.9-binance.3
 	golang.org/x/crypto => github.com/tendermint/crypto v0.0.0-20190823183015-45b1026d81ae
 )
diff --git a/go.sum b/go.sum
index 65336d116..f4ac57cd7 100644
--- a/go.sum
+++ b/go.sum
@@ -20,18 +20,18 @@ github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bgentry/speakeasy v0.1.0 h1:ByYyxL9InA1OWqxJqqp2A5pYHUrCiAL6K3J+LKSsQkY=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
-github.com/binance-chain/bnc-go-amino v0.14.1-binance.2 h1:XcbcfisVItk92UKoGbtNT8nbcfadj3H3ayuM2srAfVs=
-github.com/binance-chain/bnc-go-amino v0.14.1-binance.2/go.mod h1:yaElUUxWtv/TC/ldGtlKAvS1vKwokxgJ1d97I+6is80=
-github.com/binance-chain/bnc-tendermint v0.32.3-binance.6 h1:3Xt3IaH5zAGssK0ZxyGz5dQ7plxWdUCdtT4z7kS2M3U=
-github.com/binance-chain/bnc-tendermint v0.32.3-binance.6/go.mod h1:+5NnQZbpAijzpby/yOYlBwJjzvkXZKr6MGWZ9oI0p4Y=
-github.com/binance-chain/bnc-tendermint-iavl v0.12.0-binance.4 h1:BhaV2iiGWfRC6iB8HHOYJeUDwtQMB2pUA4ah+KCbBhI=
-github.com/binance-chain/bnc-tendermint-iavl v0.12.0-binance.4/go.mod h1:Zmh8GRdNJB8DULIOBar3JCZp6tSpcvM1NGKfE9U2EzA=
-github.com/binance-chain/ledger-cosmos-go v0.9.9-binance.3 h1:FFpFbkzlP2HUyxQCm0eoU6mkfgMNynfqZRbeWqlaLdQ=
-github.com/binance-chain/ledger-cosmos-go v0.9.9-binance.3/go.mod h1:TULULYTvPuWBxFIZFy6KjJaxJzbHeUderYNB1YhD6N0=
 github.com/binance-chain/tss v0.1.2 h1:AyTedSG5HG/WAvM9PDPWjTXQ+dvNdHg3x1c+1a584PQ=
 github.com/binance-chain/tss v0.1.2/go.mod h1:p6u8c5+JQI46aytQFQY7qg2FPwVjcS6Dwaui0U6WrRw=
 github.com/binance-chain/tss-lib v1.0.0 h1:r6Yj8g8zwiVwOAdVBu2D36Nvbxeq9qPWdVi+pqGkqQI=
 github.com/binance-chain/tss-lib v1.0.0/go.mod h1:5mmPQOOkBIjHxyGVesSUB2AemcZj5YkMJ+HPZY4Jd38=
+github.com/bnb-chain/bnc-go-amino v0.14.1-binance.2 h1:iAlp9gqG0f2LGAauf3ZiijWlT6NI+W2r9y70HH9LI3k=
+github.com/bnb-chain/bnc-go-amino v0.14.1-binance.2/go.mod h1:LiCO7jev+3HwLGAiN9gpD0z+jTz95RqgSavbse55XOY=
+github.com/bnb-chain/bnc-tendermint v0.32.3-binance.6 h1:6H6b/+Yk1hzfF4iHLe6ACv7eZ+vNZC8jk663O2gzkT8=
+github.com/bnb-chain/bnc-tendermint v0.32.3-binance.6/go.mod h1:+5NnQZbpAijzpby/yOYlBwJjzvkXZKr6MGWZ9oI0p4Y=
+github.com/bnb-chain/bnc-tendermint-iavl v0.12.0-binance.4 h1:w8pAAx1N0lmVf0Lxs1prYuDikXwirOb9T7y2yw8zOBw=
+github.com/bnb-chain/bnc-tendermint-iavl v0.12.0-binance.4/go.mod h1:Zmh8GRdNJB8DULIOBar3JCZp6tSpcvM1NGKfE9U2EzA=
+github.com/bnb-chain/ledger-cosmos-go v0.9.9-binance.3 h1:a+QLVLaP32v9gfRDKHH2AcRkzYLTWbC8UxYTJkXRSec=
+github.com/bnb-chain/ledger-cosmos-go v0.9.9-binance.3/go.mod h1:TULULYTvPuWBxFIZFy6KjJaxJzbHeUderYNB1YhD6N0=
 github.com/btcsuite/btcd v0.0.0-20190115013929-ed77733ec07d/go.mod h1:d3C0AkH6BRcvO8T0UEPu53cnw4IbV63x1bEjildYhO0=
 github.com/btcsuite/btcd v0.0.0-20190213025234-306aecffea32/go.mod h1:DrZx5ec/dmnfpw9KyYoQyYo7d0KEvTkk/5M/vbZjAr8=
 github.com/btcsuite/btcd v0.0.0-20190523000118-16327141da8c/go.mod h1:3J08xEfcugPacsc34/LKRU2yO7YmuT8yt28J8k2+rrI=
diff --git a/server/export.go b/server/export.go
index c0c5e383e..1d35137d0 100644
--- a/server/export.go
+++ b/server/export.go
@@ -2,6 +2,7 @@ package server
 
 import (
 	"fmt"
+	"os"
 
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
@@ -9,7 +10,6 @@ import (
 
 	"github.com/cosmos/cosmos-sdk/codec"
 	tmtypes "github.com/tendermint/tendermint/types"
-	"io/ioutil"
 	"path"
 )
 
@@ -29,7 +29,7 @@ func ExportCmd(ctx *Context, cdc *codec.Codec, appExporter AppExporter) *cobra.C
 			if emptyState {
 				fmt.Println("WARNING: State is not initialized. Returning genesis file.")
 				genesisFile := path.Join(home, "config", "genesis.json")
-				genesis, err := ioutil.ReadFile(genesisFile)
+				genesis, err := os.ReadFile(genesisFile)
 				if err != nil {
 					return err
 				}
@@ -70,7 +70,7 @@ func ExportCmd(ctx *Context, cdc *codec.Codec, appExporter AppExporter) *cobra.C
 }
 
 func isEmptyState(home string) (bool, error) {
-	files, err := ioutil.ReadDir(path.Join(home, "data"))
+	files, err := os.ReadDir(path.Join(home, "data"))
 	if err != nil {
 		return false, err
 	}
diff --git a/server/mock/helpers.go b/server/mock/helpers.go
index 88aacb4d8..334a21d9f 100644
--- a/server/mock/helpers.go
+++ b/server/mock/helpers.go
@@ -2,7 +2,6 @@ package mock
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 
 	abci "github.com/tendermint/tendermint/abci/types"
@@ -14,7 +13,7 @@ import (
 func SetupApp() (abci.Application, func(), error) {
 	logger := log.NewTMLogger(log.NewSyncWriter(os.Stdout)).
 		With("module", "mock")
-	rootDir, err := ioutil.TempDir("", "mock-sdk")
+	rootDir, err := os.MkdirTemp("", "mock-sdk")
 	if err != nil {
 		return nil, nil, err
 	}
diff --git a/server/test_helpers.go b/server/test_helpers.go
index 4347bad6c..5b8d76b56 100644
--- a/server/test_helpers.go
+++ b/server/test_helpers.go
@@ -3,7 +3,6 @@ package server
 import (
 	"fmt"
 	"github.com/cosmos/cosmos-sdk/client"
-	"io/ioutil"
 	"net"
 	"os"
 	"testing"
@@ -40,7 +39,7 @@ func FreeTCPAddr() (addr, port string, err error) {
 // SetupViper creates a homedir to run inside,
 // and returns a cleanup function to defer
 func SetupViper(t *testing.T) func() {
-	rootDir, err := ioutil.TempDir("", "mock-sdk-cmd")
+	rootDir, err := os.MkdirTemp("", "mock-sdk-cmd")
 	require.Nil(t, err)
 	viper.Set(cli.HomeFlag, rootDir)
 	viper.Set(client.FlagName, "moniker")
diff --git a/tests/gobash.go b/tests/gobash.go
index 87d56a297..9487af410 100644
--- a/tests/gobash.go
+++ b/tests/gobash.go
@@ -3,7 +3,6 @@ package tests
 import (
 	"fmt"
 	"io"
-	"io/ioutil"
 	"strings"
 	"testing"
 
@@ -93,7 +92,7 @@ func GoExecuteTWithStdout(t *testing.T, cmd string) (proc *Process) {
 
 	// Without this, the test halts ?!
 	go func() {
-		_, err := ioutil.ReadAll(proc.StdoutPipe)
+		_, err := io.ReadAll(proc.StdoutPipe)
 		if err != nil {
 			fmt.Println("-------------ERR-----------------------", err)
 			return
diff --git a/tests/process.go b/tests/process.go
index 08f975cf8..eb19b552d 100644
--- a/tests/process.go
+++ b/tests/process.go
@@ -2,7 +2,6 @@ package tests
 
 import (
 	"io"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"time"
@@ -103,13 +102,13 @@ func (proc *Process) Wait() {
 	proc.EndTime = time.Now() // TODO make this goroutine-safe
 }
 
-// ReadAll calls ioutil.ReadAll on the StdoutPipe and StderrPipe.
+// ReadAll calls io.ReadAll on the StdoutPipe and StderrPipe.
 func (proc *Process) ReadAll() (stdout []byte, stderr []byte, err error) {
-	outbz, err := ioutil.ReadAll(proc.StdoutPipe)
+	outbz, err := io.ReadAll(proc.StdoutPipe)
 	if err != nil {
 		return nil, nil, err
 	}
-	errbz, err := ioutil.ReadAll(proc.StderrPipe)
+	errbz, err := io.ReadAll(proc.StderrPipe)
 	if err != nil {
 		return nil, nil, err
 	}
diff --git a/tests/util.go b/tests/util.go
index 48649eaf7..f4b0185b8 100644
--- a/tests/util.go
+++ b/tests/util.go
@@ -2,7 +2,7 @@ package tests
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"time"
 
@@ -97,7 +97,7 @@ func waitForHeight(height int64, url string) {
 			panic(err)
 		}
 
-		body, err := ioutil.ReadAll(res.Body)
+		body, err := io.ReadAll(res.Body)
 		if err != nil {
 			panic(err)
 		}
@@ -151,7 +151,7 @@ func WaitForStart(url string) {
 		if err != nil || res == nil {
 			continue
 		}
-		//		body, _ := ioutil.ReadAll(res.Body)
+		//		body, _ := io.ReadAll(res.Body)
 		//		fmt.Println("BODY", string(body))
 		err = res.Body.Close()
 		if err != nil {
diff --git a/x/auth/client/cli/sign.go b/x/auth/client/cli/sign.go
index 93408ae2b..8f73d83a1 100644
--- a/x/auth/client/cli/sign.go
+++ b/x/auth/client/cli/sign.go
@@ -2,9 +2,8 @@ package cli
 
 import (
 	"fmt"
-	"io/ioutil"
-
 	"github.com/spf13/viper"
+	"os"
 
 	"github.com/cosmos/cosmos-sdk/client"
 	"github.com/cosmos/cosmos-sdk/client/context"
@@ -94,7 +93,7 @@ func printSignatures(stdTx auth.StdTx) {
 
 func readAndUnmarshalStdTx(cdc *amino.Codec, filename string) (stdTx auth.StdTx, err error) {
 	var bytes []byte
-	if bytes, err = ioutil.ReadFile(filename); err != nil {
+	if bytes, err = os.ReadFile(filename); err != nil {
 		return
 	}
 	if err = cdc.UnmarshalJSON(bytes, &stdTx); err != nil {
diff --git a/x/auth/client/rest/sign.go b/x/auth/client/rest/sign.go
index 13dd8d20c..b47bd2b8b 100644
--- a/x/auth/client/rest/sign.go
+++ b/x/auth/client/rest/sign.go
@@ -1,7 +1,7 @@
 package rest
 
 import (
-	"io/ioutil"
+	"io"
 	"net/http"
 
 	"github.com/cosmos/cosmos-sdk/client/context"
@@ -30,7 +30,7 @@ func SignTxRequestHandlerFn(cdc *codec.Codec, cliCtx context.CLIContext) http.Ha
 	return func(w http.ResponseWriter, r *http.Request) {
 		var m SignBody
 
-		body, err := ioutil.ReadAll(r.Body)
+		body, err := io.ReadAll(r.Body)
 		if err != nil {
 			utils.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
 			return
diff --git a/x/bank/client/cli/broadcast.go b/x/bank/client/cli/broadcast.go
index 9371062fd..598096b9c 100644
--- a/x/bank/client/cli/broadcast.go
+++ b/x/bank/client/cli/broadcast.go
@@ -1,7 +1,7 @@
 package cli
 
 import (
-	"io/ioutil"
+	"io"
 	"os"
 
 	"github.com/cosmos/cosmos-sdk/client/context"
@@ -41,9 +41,9 @@ in place of an input filename, the command reads from standard input.`,
 func readAndUnmarshalStdTx(cdc *amino.Codec, filename string) (stdTx auth.StdTx, err error) {
 	var bytes []byte
 	if filename == "-" {
-		bytes, err = ioutil.ReadAll(os.Stdin)
+		bytes, err = io.ReadAll(os.Stdin)
 	} else {
-		bytes, err = ioutil.ReadFile(filename)
+		bytes, err = os.ReadFile(filename)
 	}
 	if err != nil {
 		return
diff --git a/x/bank/client/rest/broadcast.go b/x/bank/client/rest/broadcast.go
index 5c557a506..03372b80a 100644
--- a/x/bank/client/rest/broadcast.go
+++ b/x/bank/client/rest/broadcast.go
@@ -1,7 +1,7 @@
 package rest
 
 import (
-	"io/ioutil"
+	"io"
 	"net/http"
 
 	"github.com/cosmos/cosmos-sdk/client/context"
@@ -38,7 +38,7 @@ func BroadcastTxRequestHandlerFn(cdc *codec.Codec, cliCtx context.CLIContext) ht
 }
 
 func unmarshalBodyOrReturnBadRequest(cliCtx context.CLIContext, w http.ResponseWriter, r *http.Request, m *broadcastBody) bool {
-	body, err := ioutil.ReadAll(r.Body)
+	body, err := io.ReadAll(r.Body)
 	if err != nil {
 		utils.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
 		return false
diff --git a/x/gov/client/cli/tx.go b/x/gov/client/cli/tx.go
index ceeddcedc..4d6392b0e 100644
--- a/x/gov/client/cli/tx.go
+++ b/x/gov/client/cli/tx.go
@@ -3,7 +3,7 @@ package cli
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"strings"
 	"time"
 
@@ -187,7 +187,7 @@ func parseSubmitProposalFlags() (*proposal, error) {
 		}
 	}
 
-	contents, err := ioutil.ReadFile(proposalFile)
+	contents, err := os.ReadFile(proposalFile)
 	if err != nil {
 		return nil, err
 	}
diff --git a/x/gov/client/cli/tx_test.go b/x/gov/client/cli/tx_test.go
index 73df8c290..41681ad1f 100644
--- a/x/gov/client/cli/tx_test.go
+++ b/x/gov/client/cli/tx_test.go
@@ -1,7 +1,7 @@
 package cli
 
 import (
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/spf13/viper"
@@ -9,7 +9,7 @@ import (
 )
 
 func TestParseSubmitProposalFlags(t *testing.T) {
-	okJSON, err := ioutil.TempFile("", "proposal")
+	okJSON, err := os.CreateTemp("", "proposal")
 	require.Nil(t, err, "unexpected error")
 	okJSON.WriteString(`
 {
@@ -20,7 +20,7 @@ func TestParseSubmitProposalFlags(t *testing.T) {
 }
 `)
 
-	badJSON, err := ioutil.TempFile("", "proposal")
+	badJSON, err := os.CreateTemp("", "proposal")
 	require.Nil(t, err, "unexpected error")
 	badJSON.WriteString("bad json")
 
diff --git a/x/paramHub/client/cli/fees.go b/x/paramHub/client/cli/fees.go
index 0774a9221..7b0c917a5 100644
--- a/x/paramHub/client/cli/fees.go
+++ b/x/paramHub/client/cli/fees.go
@@ -4,7 +4,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"time"
 
 	"github.com/spf13/cobra"
@@ -47,7 +47,7 @@ func SubmitFeeChangeProposalCmd(cdc *codec.Codec) *cobra.Command {
 				return errors.New("fee-param-file is missing")
 			}
 
-			bz, err := ioutil.ReadFile(feeParamFile)
+			bz, err := os.ReadFile(feeParamFile)
 			if err != nil {
 				return err
 			}
diff --git a/x/paramHub/client/cli/scParams.go b/x/paramHub/client/cli/scParams.go
index d38d85b9e..aa746d926 100644
--- a/x/paramHub/client/cli/scParams.go
+++ b/x/paramHub/client/cli/scParams.go
@@ -4,7 +4,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"time"
 
 	"github.com/spf13/cobra"
@@ -49,7 +49,7 @@ func SubmitSCParamChangeProposalCmd(cdc *codec.Codec) *cobra.Command {
 				return errors.New("sc-param-file is missing")
 			}
 
-			bz, err := ioutil.ReadFile(scParamFile)
+			bz, err := os.ReadFile(scParamFile)
 			if err != nil {
 				return err
 			}
diff --git a/x/slashing/client/cli/tx_sidechain.go b/x/slashing/client/cli/tx_sidechain.go
index a5d10aa8c..573e86c40 100644
--- a/x/slashing/client/cli/tx_sidechain.go
+++ b/x/slashing/client/cli/tx_sidechain.go
@@ -4,8 +4,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
-
 	"github.com/cosmos/cosmos-sdk/bsc"
 	"github.com/cosmos/cosmos-sdk/client/context"
 	"github.com/cosmos/cosmos-sdk/client/utils"
@@ -16,6 +14,7 @@ import (
 	"github.com/cosmos/cosmos-sdk/x/slashing"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
+	"os"
 )
 
 const (
@@ -49,7 +48,7 @@ func GetCmdBscSubmitEvidence(cdc *codec.Codec) *cobra.Command {
 			filePath := viper.GetString(flagEvidenceFile)
 			evidenceBytes := make([]byte, 0)
 			if filePath != "" {
-				evidenceBytes, err = ioutil.ReadFile(filePath)
+				evidenceBytes, err = os.ReadFile(filePath)
 				if err != nil {
 					return err
 				}
diff --git a/x/slashing/client/rest/tx.go b/x/slashing/client/rest/tx.go
index d6db40f6d..9158ee209 100644
--- a/x/slashing/client/rest/tx.go
+++ b/x/slashing/client/rest/tx.go
@@ -3,7 +3,7 @@ package rest
 import (
 	"bytes"
 	"encoding/json"
-	"io/ioutil"
+	"io"
 	"net/http"
 
 	"github.com/gorilla/mux"
@@ -84,7 +84,7 @@ func bscEvidenceSubmitRequestHandlerFn(cdc *codec.Codec, kb keys.Keybase, cliCtx
 
 	return func(w http.ResponseWriter, r *http.Request) {
 
-		body, err := ioutil.ReadAll(r.Body)
+		body, err := io.ReadAll(r.Body)
 		if err != nil {
 			utils.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
 			return
diff --git a/x/stake/client/rest/tx.go b/x/stake/client/rest/tx.go
index 6acf3f660..a06347789 100644
--- a/x/stake/client/rest/tx.go
+++ b/x/stake/client/rest/tx.go
@@ -2,7 +2,7 @@ package rest
 
 import (
 	"bytes"
-	"io/ioutil"
+	"io"
 	"net/http"
 
 	"github.com/cosmos/cosmos-sdk/client/context"
@@ -62,7 +62,7 @@ func delegationsRequestHandlerFn(cdc *codec.Codec, kb keys.Keybase, cliCtx conte
 	return func(w http.ResponseWriter, r *http.Request) {
 		var req EditDelegationsReq
 
-		body, err := ioutil.ReadAll(r.Body)
+		body, err := io.ReadAll(r.Body)
 		if err != nil {
 			utils.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
 			return