diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 762a49a31..90a913549 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        go: [ '1.14.x', '1.15.x', '1.16.x' ]
+        go: [ '1.16.x' ]
     steps:
       - name: Setup go
         uses: actions/setup-go@v2
diff --git a/Dockerfile.cli b/Dockerfile.cli
index 3ba2fbed8..1b309cc9e 100644
--- a/Dockerfile.cli
+++ b/Dockerfile.cli
@@ -1,4 +1,4 @@
-FROM golang:1.14-alpine as basebuilder
+FROM golang:1.16-alpine as basebuilder
 RUN apk add --update make bash
 
 FROM basebuilder as builder
diff --git a/Dockerfile.ir b/Dockerfile.ir
index b6978f107..aeba28db5 100644
--- a/Dockerfile.ir
+++ b/Dockerfile.ir
@@ -1,4 +1,4 @@
-FROM golang:1.14-alpine as basebuilder
+FROM golang:1.16-alpine as basebuilder
 RUN apk add --update make bash
 
 FROM basebuilder as builder
diff --git a/Dockerfile.storage b/Dockerfile.storage
index cc3d7d75b..006839e28 100644
--- a/Dockerfile.storage
+++ b/Dockerfile.storage
@@ -1,4 +1,4 @@
-FROM golang:1.14-alpine as basebuilder
+FROM golang:1.16-alpine as basebuilder
 RUN apk add --update make bash
 
 FROM basebuilder as builder
diff --git a/Dockerfile.storage-testnet b/Dockerfile.storage-testnet
index 4f570ccb1..9db54d53c 100644
--- a/Dockerfile.storage-testnet
+++ b/Dockerfile.storage-testnet
@@ -1,4 +1,4 @@
-FROM golang:1.14-alpine as basebuilder
+FROM golang:1.16-alpine as basebuilder
 RUN apk add --update make bash
 
 FROM basebuilder as builder
diff --git a/cmd/neofs-cli/modules/container.go b/cmd/neofs-cli/modules/container.go
index 520910cba..55ddcd9c0 100644
--- a/cmd/neofs-cli/modules/container.go
+++ b/cmd/neofs-cli/modules/container.go
@@ -6,7 +6,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"math"
 	"os"
 	"strconv"
@@ -339,7 +338,7 @@ var getContainerInfoCmd = &cobra.Command{
 		)
 
 		if containerPathFrom != "" {
-			data, err := ioutil.ReadFile(containerPathFrom)
+			data, err := os.ReadFile(containerPathFrom)
 			if err != nil {
 				cmd.PrintErrln(fmt.Errorf("can't read file: %w", err))
 				return
@@ -398,7 +397,7 @@ var getContainerInfoCmd = &cobra.Command{
 				}
 			}
 
-			err = ioutil.WriteFile(containerPathTo, data, 0644)
+			err = os.WriteFile(containerPathTo, data, 0644)
 			if err != nil {
 				cmd.PrintErrln(fmt.Errorf("can't write container to file: %w", err))
 				return
@@ -472,7 +471,7 @@ var getExtendedACLCmd = &cobra.Command{
 		cmd.Println("Signature:")
 		printJSONMarshaler(cmd, sig, "signature")
 
-		if err = ioutil.WriteFile(containerPathTo, data, 0644); err != nil {
+		if err = os.WriteFile(containerPathTo, data, 0644); err != nil {
 			cmd.PrintErrln(err)
 		}
 	},
@@ -636,7 +635,7 @@ func getSessionToken(path string) (*session.Token, error) {
 	var tok *session.Token
 
 	if path != "" {
-		data, err := ioutil.ReadFile(path)
+		data, err := os.ReadFile(path)
 		if err != nil {
 			return nil, err
 		}
@@ -661,7 +660,7 @@ func parseContainerPolicy(policyString string) (*netmap.PlacementPolicy, error)
 	if err == nil {
 		printVerbose("Reading placement policy from file: %s", policyString)
 
-		data, err := ioutil.ReadFile(policyString)
+		data, err := os.ReadFile(policyString)
 		if err != nil {
 			return nil, fmt.Errorf("can't read file with placement policy: %w", err)
 		}
@@ -839,7 +838,7 @@ func parseEACL(eaclPath string) (*eacl.Table, error) {
 
 	printVerbose("Reading EACL from file: %s", eaclPath)
 
-	data, err := ioutil.ReadFile(eaclPath)
+	data, err := os.ReadFile(eaclPath)
 	if err != nil {
 		return nil, fmt.Errorf("can't read file with EACL: %w", err)
 	}
diff --git a/cmd/neofs-cli/modules/object.go b/cmd/neofs-cli/modules/object.go
index 34f943c6d..d020f5ed6 100644
--- a/cmd/neofs-cli/modules/object.go
+++ b/cmd/neofs-cli/modules/object.go
@@ -7,7 +7,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"math"
 	"os"
 	"path/filepath"
@@ -638,7 +637,7 @@ func parseSearchFilters(cmd *cobra.Command) (object.SearchFilters, error) {
 		default:
 			return nil, fmt.Errorf("invalid field number: %d", len(words))
 		case 1:
-			data, err := ioutil.ReadFile(words[0])
+			data, err := os.ReadFile(words[0])
 			if err != nil {
 				return nil, err
 			}
@@ -808,7 +807,7 @@ func saveAndPrintHeader(cmd *cobra.Command, obj *object.Object, filename string)
 			cmd.Println(string(bs))
 			return nil
 		}
-		err := ioutil.WriteFile(filename, bs, os.ModePerm)
+		err := os.WriteFile(filename, bs, os.ModePerm)
 		if err != nil {
 			return err
 		}
@@ -906,7 +905,7 @@ func getBearerToken(cmd *cobra.Command, flagname string) (*token.BearerToken, er
 		return nil, nil
 	}
 
-	data, err := ioutil.ReadFile(path)
+	data, err := os.ReadFile(path)
 	if err != nil {
 		return nil, fmt.Errorf("can't read bearer token file: %w", err)
 	}
diff --git a/cmd/neofs-cli/modules/root.go b/cmd/neofs-cli/modules/root.go
index 486721827..6ae57f06c 100644
--- a/cmd/neofs-cli/modules/root.go
+++ b/cmd/neofs-cli/modules/root.go
@@ -5,7 +5,6 @@ import (
 	"crypto/tls"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -195,7 +194,7 @@ func getKey() (*ecdsa.PrivateKey, error) {
 }
 
 func getKeyFromFile(keyPath string) (*ecdsa.PrivateKey, error) {
-	data, err := ioutil.ReadFile(keyPath)
+	data, err := os.ReadFile(keyPath)
 	if err != nil {
 		return nil, fmt.Errorf("%w: %v", errInvalidKey, err)
 	}
diff --git a/cmd/neofs-cli/modules/util.go b/cmd/neofs-cli/modules/util.go
index 878161493..64aa148d7 100644
--- a/cmd/neofs-cli/modules/util.go
+++ b/cmd/neofs-cli/modules/util.go
@@ -6,7 +6,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strconv"
 	"time"
@@ -303,7 +302,7 @@ func signBearerToken(cmd *cobra.Command, _ []string) {
 		return
 	}
 
-	err = ioutil.WriteFile(to, data, 0644)
+	err = os.WriteFile(to, data, 0644)
 	if err != nil {
 		cmd.PrintErrln(fmt.Errorf("can't write signed bearer token to file: %w", err))
 		return
@@ -349,7 +348,7 @@ func signSessionToken(cmd *cobra.Command, _ []string) {
 		return
 	}
 
-	err = ioutil.WriteFile(to, data, 0644)
+	err = os.WriteFile(to, data, 0644)
 	if err != nil {
 		cmd.PrintErrln(fmt.Errorf("can't write signed session token to %s: %w", to, err))
 		return
@@ -389,7 +388,7 @@ func convertEACLTable(cmd *cobra.Command, _ []string) {
 		return
 	}
 
-	err = ioutil.WriteFile(to, data, 0644)
+	err = os.WriteFile(to, data, 0644)
 	if err != nil {
 		cmd.PrintErrln(fmt.Errorf("can't write exteded ACL table to file: %w", err))
 		return
@@ -486,7 +485,7 @@ func keyerGenerate(filename string, d *keyer.Dashboard) error {
 	}
 
 	if filename != "" {
-		return ioutil.WriteFile(filename, key, 0600)
+		return os.WriteFile(filename, key, 0600)
 	}
 
 	return nil
@@ -502,7 +501,7 @@ func fileExists(filename string) bool {
 }
 
 func keyerParseFile(filename string, d *keyer.Dashboard) error {
-	data, err := ioutil.ReadFile(filename)
+	data, err := os.ReadFile(filename)
 	if err != nil {
 		return fmt.Errorf("can't open %v file: %w", filename, err)
 	}
diff --git a/cmd/neofs-ir/main.go b/cmd/neofs-ir/main.go
index bfbb4ccfb..aad989199 100644
--- a/cmd/neofs-ir/main.go
+++ b/cmd/neofs-ir/main.go
@@ -1,16 +1,18 @@
 package main
 
 import (
+	"context"
 	"flag"
 	"fmt"
 	"net/http"
 	"os"
+	"os/signal"
 	"strings"
+	"syscall"
 
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/nspcc-dev/neofs-node/misc"
 	"github.com/nspcc-dev/neofs-node/pkg/innerring"
-	"github.com/nspcc-dev/neofs-node/pkg/util/grace"
 	httputil "github.com/nspcc-dev/neofs-node/pkg/util/http"
 	"github.com/nspcc-dev/neofs-node/pkg/util/logger"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
@@ -58,7 +60,9 @@ func main() {
 	log, err := logger.NewLogger(logPrm)
 	exitErr(err)
 
-	ctx := grace.NewGracefulContext(log)
+	ctx, cancel := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)
+	defer cancel()
+
 	intErr := make(chan error) // internal inner ring errors
 
 	httpServers := initHTTPServers(cfg)
diff --git a/cmd/neofs-node/config/engine/config_test.go b/cmd/neofs-node/config/engine/config_test.go
index 98ce0ea1d..d540b9a70 100644
--- a/cmd/neofs-node/config/engine/config_test.go
+++ b/cmd/neofs-node/config/engine/config_test.go
@@ -1,7 +1,7 @@
 package engineconfig_test
 
 import (
-	"os"
+	"io/fs"
 	"testing"
 	"time"
 
@@ -47,7 +47,7 @@ func TestEngineSection(t *testing.T) {
 				require.EqualValues(t, 555, wc.WorkersNumber())
 
 				require.Equal(t, "tmp/0/meta", meta.Path())
-				require.Equal(t, os.FileMode(0700), meta.Perm())
+				require.Equal(t, fs.FileMode(0700), meta.Perm())
 
 				require.Equal(t, "tmp/0/blob", blob.Path())
 				require.EqualValues(t, 0666, blob.Perm())
@@ -73,7 +73,7 @@ func TestEngineSection(t *testing.T) {
 				require.EqualValues(t, 556, wc.WorkersNumber())
 
 				require.Equal(t, "tmp/1/meta", meta.Path())
-				require.Equal(t, os.FileMode(0701), meta.Perm())
+				require.Equal(t, fs.FileMode(0701), meta.Perm())
 
 				require.Equal(t, "tmp/1/blob", blob.Path())
 				require.EqualValues(t, 0667, blob.Perm())
diff --git a/cmd/neofs-node/config/engine/shard/blobstor/config.go b/cmd/neofs-node/config/engine/shard/blobstor/config.go
index 419404637..791dfb193 100644
--- a/cmd/neofs-node/config/engine/shard/blobstor/config.go
+++ b/cmd/neofs-node/config/engine/shard/blobstor/config.go
@@ -1,7 +1,7 @@
 package blobstorconfig
 
 import (
-	"os"
+	"io/fs"
 
 	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
 	blobovniczaconfig "github.com/nspcc-dev/neofs-node/cmd/neofs-node/config/engine/shard/blobstor/blobovnicza"
@@ -45,10 +45,10 @@ func (x *Config) Path() string {
 	return p
 }
 
-// Perm returns value of "perm" config parameter as a os.FileMode.
+// Perm returns value of "perm" config parameter as a fs.FileMode.
 //
 // Returns PermDefault if value is not a non-zero number.
-func (x *Config) Perm() os.FileMode {
+func (x *Config) Perm() fs.FileMode {
 	p := config.UintSafe(
 		(*config.Config)(x),
 		"perm",
@@ -58,7 +58,7 @@ func (x *Config) Perm() os.FileMode {
 		p = PermDefault
 	}
 
-	return os.FileMode(p)
+	return fs.FileMode(p)
 }
 
 // ShallowDepth returns value of "shallow_depth" config parameter.
diff --git a/cmd/neofs-node/config/engine/shard/metabase/config.go b/cmd/neofs-node/config/engine/shard/metabase/config.go
index a5df71e6c..0a0466ef2 100644
--- a/cmd/neofs-node/config/engine/shard/metabase/config.go
+++ b/cmd/neofs-node/config/engine/shard/metabase/config.go
@@ -1,7 +1,7 @@
 package metabaseconfig
 
 import (
-	"os"
+	"io/fs"
 
 	"github.com/nspcc-dev/neofs-node/cmd/neofs-node/config"
 )
@@ -37,10 +37,10 @@ func (x *Config) Path() string {
 	return p
 }
 
-// Perm returns value of "perm" config parameter as a os.FileMode.
+// Perm returns value of "perm" config parameter as a fs.FileMode.
 //
 // Returns PermDefault if value is not a positive number.
-func (x *Config) Perm() os.FileMode {
+func (x *Config) Perm() fs.FileMode {
 	p := config.UintSafe(
 		(*config.Config)(x),
 		"perm",
@@ -50,5 +50,5 @@ func (x *Config) Perm() os.FileMode {
 		p = PermDefault
 	}
 
-	return os.FileMode(p)
+	return fs.FileMode(p)
 }
diff --git a/cmd/neofs-node/config/node/config.go b/cmd/neofs-node/config/node/config.go
index c22fb239a..2aad548b5 100644
--- a/cmd/neofs-node/config/node/config.go
+++ b/cmd/neofs-node/config/node/config.go
@@ -3,7 +3,7 @@ package nodeconfig
 import (
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"strconv"
 
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
@@ -35,7 +35,7 @@ func Key(c *config.Config) *keys.PrivateKey {
 		err  error
 		data []byte
 	)
-	if data, err = ioutil.ReadFile(v); err == nil {
+	if data, err = os.ReadFile(v); err == nil {
 		key, err = keys.NewPrivateKeyFromBytes(data)
 	}
 
diff --git a/cmd/neofs-node/main.go b/cmd/neofs-node/main.go
index 70f891f22..d311857f9 100644
--- a/cmd/neofs-node/main.go
+++ b/cmd/neofs-node/main.go
@@ -5,10 +5,11 @@ import (
 	"flag"
 	"fmt"
 	"log"
+	"os/signal"
+	"syscall"
 
 	"github.com/nspcc-dev/neofs-node/misc"
 	"github.com/nspcc-dev/neofs-node/pkg/services/control"
-	"github.com/nspcc-dev/neofs-node/pkg/util/grace"
 	"go.uber.org/zap"
 )
 
@@ -48,7 +49,7 @@ func main() {
 }
 
 func initApp(c *cfg) {
-	c.ctx, c.ctxCancel = context.WithCancel(grace.NewGracefulContext(nil))
+	c.ctx, c.ctxCancel = signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)
 
 	initGRPC(c)
 
diff --git a/go.mod b/go.mod
index ecc70dbd4..c8e8e887e 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/nspcc-dev/neofs-node
 
-go 1.14
+go 1.16
 
 require (
 	github.com/golang/protobuf v1.5.2
diff --git a/go.sum b/go.sum
index 24cc0acb3..5887cf045 100644
Binary files a/go.sum and b/go.sum differ
diff --git a/pkg/local_object_storage/blobovnicza/blobovnicza.go b/pkg/local_object_storage/blobovnicza/blobovnicza.go
index d316f3d79..fc7795d35 100644
--- a/pkg/local_object_storage/blobovnicza/blobovnicza.go
+++ b/pkg/local_object_storage/blobovnicza/blobovnicza.go
@@ -1,6 +1,7 @@
 package blobovnicza
 
 import (
+	"io/fs"
 	"os"
 	"time"
 
@@ -33,7 +34,7 @@ type cfg struct {
 }
 
 type boltDBCfg struct {
-	perm os.FileMode
+	perm fs.FileMode
 
 	path string
 
@@ -77,7 +78,7 @@ func WithPath(path string) Option {
 
 // WithPermissions returns option to specify permission bits
 // of Blobovnicza's system path.
-func WithPermissions(perm os.FileMode) Option {
+func WithPermissions(perm fs.FileMode) Option {
 	return func(c *cfg) {
 		c.perm = perm
 	}
diff --git a/pkg/local_object_storage/blobstor/blobstor.go b/pkg/local_object_storage/blobstor/blobstor.go
index aa3fdddcf..30ee25d65 100644
--- a/pkg/local_object_storage/blobstor/blobstor.go
+++ b/pkg/local_object_storage/blobstor/blobstor.go
@@ -2,7 +2,7 @@ package blobstor
 
 import (
 	"encoding/hex"
-	"os"
+	"io/fs"
 	"path"
 
 	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobovnicza"
@@ -145,7 +145,7 @@ func WithRootPath(rootDir string) Option {
 
 // WithRootPerm returns option to set permission
 // bits of the fs tree.
-func WithRootPerm(perm os.FileMode) Option {
+func WithRootPerm(perm fs.FileMode) Option {
 	return func(c *cfg) {
 		c.fsTree.Permissions = perm
 		c.blzOpts = append(c.blzOpts, blobovnicza.WithPermissions(perm))
diff --git a/pkg/local_object_storage/blobstor/fstree/fstree.go b/pkg/local_object_storage/blobstor/fstree/fstree.go
index 840e9d08e..d22fd73cc 100644
--- a/pkg/local_object_storage/blobstor/fstree/fstree.go
+++ b/pkg/local_object_storage/blobstor/fstree/fstree.go
@@ -3,7 +3,7 @@ package fstree
 import (
 	"crypto/sha256"
 	"errors"
-	"io/ioutil"
+	"io/fs"
 	"os"
 	"path"
 	"strings"
@@ -23,7 +23,7 @@ type FSTree struct {
 // Info groups the information about file storage.
 type Info struct {
 	// Permission bits of the root directory.
-	Permissions os.FileMode
+	Permissions fs.FileMode
 
 	// Full path to the root directory.
 	RootPath string
@@ -73,7 +73,7 @@ func (t *FSTree) Iterate(f func(addr *objectSDK.Address, data []byte) error) err
 
 func (t *FSTree) iterate(depth int, curPath []string, f func(*objectSDK.Address, []byte) error) error {
 	curName := strings.Join(curPath[1:], "")
-	des, err := ioutil.ReadDir(path.Join(curPath...))
+	des, err := os.ReadDir(path.Join(curPath...))
 	if err != nil {
 		return err
 	}
@@ -101,7 +101,7 @@ func (t *FSTree) iterate(depth int, curPath []string, f func(*objectSDK.Address,
 			continue
 		}
 
-		data, err := ioutil.ReadFile(path.Join(curPath...))
+		data, err := os.ReadFile(path.Join(curPath...))
 		if err != nil {
 			return err
 		}
@@ -161,7 +161,7 @@ func (t *FSTree) Put(addr *objectSDK.Address, data []byte) error {
 		return err
 	}
 
-	return ioutil.WriteFile(p, data, t.Permissions)
+	return os.WriteFile(p, data, t.Permissions)
 }
 
 // Get returns object from storage by address.
@@ -172,5 +172,5 @@ func (t *FSTree) Get(addr *objectSDK.Address) ([]byte, error) {
 		return nil, ErrFileNotFound
 	}
 
-	return ioutil.ReadFile(p)
+	return os.ReadFile(p)
 }
diff --git a/pkg/local_object_storage/metabase/db.go b/pkg/local_object_storage/metabase/db.go
index 0b219fc59..bee091a6b 100644
--- a/pkg/local_object_storage/metabase/db.go
+++ b/pkg/local_object_storage/metabase/db.go
@@ -3,6 +3,7 @@ package meta
 import (
 	"encoding/binary"
 	"encoding/hex"
+	"io/fs"
 	"os"
 	"strconv"
 
@@ -132,7 +133,7 @@ func WithPath(path string) Option {
 
 // WithPermissions returns option to specify permission bits
 // of Metabase system path.
-func WithPermissions(perm os.FileMode) Option {
+func WithPermissions(perm fs.FileMode) Option {
 	return func(c *cfg) {
 		c.info.Permission = perm
 	}
diff --git a/pkg/local_object_storage/metabase/info.go b/pkg/local_object_storage/metabase/info.go
index 967e9c713..7d1bfefb7 100644
--- a/pkg/local_object_storage/metabase/info.go
+++ b/pkg/local_object_storage/metabase/info.go
@@ -1,7 +1,7 @@
 package meta
 
 import (
-	"os"
+	"io/fs"
 )
 
 // Info groups the information about DB.
@@ -10,7 +10,7 @@ type Info struct {
 	Path string
 
 	// Permission of database file.
-	Permission os.FileMode
+	Permission fs.FileMode
 }
 
 // DumpInfo returns information about the DB.
diff --git a/pkg/util/grace/grace.go b/pkg/util/grace/grace.go
deleted file mode 100644
index 100e124d0..000000000
--- a/pkg/util/grace/grace.go
+++ /dev/null
@@ -1,32 +0,0 @@
-package grace
-
-import (
-	"context"
-	"fmt"
-	"os"
-	"os/signal"
-	"syscall"
-
-	"go.uber.org/zap"
-)
-
-// NewGracefulContext returns grace context that cancelled by sigint,
-// sigterm and sighup.
-func NewGracefulContext(l *zap.Logger) context.Context {
-	ctx, cancel := context.WithCancel(context.Background())
-
-	go func() {
-		ch := make(chan os.Signal, 1)
-		signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)
-		sig := <-ch
-		if l != nil {
-			l.Info("received signal",
-				zap.String("signal", sig.String()))
-		} else {
-			fmt.Printf("received signal %s\n", sig)
-		}
-		cancel()
-	}()
-
-	return ctx
-}
diff --git a/pkg/util/locode/db/airports/db.go b/pkg/util/locode/db/airports/db.go
index d63aaa518..f14414cc1 100644
--- a/pkg/util/locode/db/airports/db.go
+++ b/pkg/util/locode/db/airports/db.go
@@ -2,7 +2,7 @@ package airportsdb
 
 import (
 	"fmt"
-	"os"
+	"io/fs"
 	"sync"
 )
 
@@ -41,7 +41,7 @@ type DB struct {
 
 type pathMode struct {
 	path string
-	mode os.FileMode
+	mode fs.FileMode
 }
 
 const invalidPrmValFmt = "invalid parameter %s (%T):%v"
diff --git a/pkg/util/locode/db/airports/opts.go b/pkg/util/locode/db/airports/opts.go
index 1f5a3ea6a..3799d9e27 100644
--- a/pkg/util/locode/db/airports/opts.go
+++ b/pkg/util/locode/db/airports/opts.go
@@ -1,19 +1,19 @@
 package airportsdb
 
 import (
-	"os"
+	"io/fs"
 )
 
 // Option sets an optional parameter of DB.
 type Option func(*options)
 
 type options struct {
-	airportMode, countryMode os.FileMode
+	airportMode, countryMode fs.FileMode
 }
 
 func defaultOpts() *options {
 	return &options{
-		airportMode: os.ModePerm, // 0777
-		countryMode: os.ModePerm, // 0777
+		airportMode: fs.ModePerm, // 0777
+		countryMode: fs.ModePerm, // 0777
 	}
 }
diff --git a/pkg/util/locode/db/boltdb/db.go b/pkg/util/locode/db/boltdb/db.go
index 53a23b22d..56655841a 100644
--- a/pkg/util/locode/db/boltdb/db.go
+++ b/pkg/util/locode/db/boltdb/db.go
@@ -2,7 +2,7 @@ package locodebolt
 
 import (
 	"fmt"
-	"os"
+	"io/fs"
 
 	"go.etcd.io/bbolt"
 )
@@ -34,7 +34,7 @@ type Prm struct {
 type DB struct {
 	path string
 
-	mode os.FileMode
+	mode fs.FileMode
 
 	boltOpts *bbolt.Options
 
diff --git a/pkg/util/locode/db/boltdb/opts.go b/pkg/util/locode/db/boltdb/opts.go
index 62b132596..db0cccd3a 100644
--- a/pkg/util/locode/db/boltdb/opts.go
+++ b/pkg/util/locode/db/boltdb/opts.go
@@ -1,6 +1,7 @@
 package locodebolt
 
 import (
+	"io/fs"
 	"os"
 	"time"
 
@@ -11,7 +12,7 @@ import (
 type Option func(*options)
 
 type options struct {
-	mode os.FileMode
+	mode fs.FileMode
 
 	boltOpts *bbolt.Options
 }
diff --git a/pkg/util/locode/db/continents/geojson/calls.go b/pkg/util/locode/db/continents/geojson/calls.go
index 288fded6f..06842e336 100644
--- a/pkg/util/locode/db/continents/geojson/calls.go
+++ b/pkg/util/locode/db/continents/geojson/calls.go
@@ -2,7 +2,7 @@ package continentsdb
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 
 	locodedb "github.com/nspcc-dev/neofs-node/pkg/util/locode/db"
 	"github.com/paulmach/orb"
@@ -53,7 +53,7 @@ func (db *DB) PointContinent(point *locodedb.Point) (*locodedb.Continent, error)
 }
 
 func (db *DB) init() error {
-	data, err := ioutil.ReadFile(db.path)
+	data, err := os.ReadFile(db.path)
 	if err != nil {
 		return fmt.Errorf("could not read data file: %w", err)
 	}
diff --git a/pkg/util/locode/table/csv/opts.go b/pkg/util/locode/table/csv/opts.go
index b638d25d5..e521ddf7f 100644
--- a/pkg/util/locode/table/csv/opts.go
+++ b/pkg/util/locode/table/csv/opts.go
@@ -1,14 +1,14 @@
 package csvlocode
 
 import (
-	"os"
+	"io/fs"
 )
 
 // Option sets an optional parameter of Table.
 type Option func(*options)
 
 type options struct {
-	mode os.FileMode
+	mode fs.FileMode
 
 	extraPaths []string
 }
diff --git a/pkg/util/locode/table/csv/table.go b/pkg/util/locode/table/csv/table.go
index e9bc3e207..ef5e996dc 100644
--- a/pkg/util/locode/table/csv/table.go
+++ b/pkg/util/locode/table/csv/table.go
@@ -2,7 +2,7 @@ package csvlocode
 
 import (
 	"fmt"
-	"os"
+	"io/fs"
 	"sync"
 )
 
@@ -32,7 +32,7 @@ type Prm struct {
 type Table struct {
 	paths []string
 
-	mode os.FileMode
+	mode fs.FileMode
 
 	subDivPath string