diff --git a/go.mod b/go.mod
index 7d8a985a..2d3b2286 100644
--- a/go.mod
+++ b/go.mod
@@ -17,7 +17,7 @@ require (
 	github.com/multiformats/go-multihash v0.0.13 // indirect
 	github.com/nspcc-dev/hrw v1.0.9
 	github.com/nspcc-dev/neo-go v0.91.1-pre.0.20201030072836-71216865717b
-	github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201208072327-139660c6ff59
+	github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201210152623-803c91b3eb2b
 	github.com/nspcc-dev/neofs-crypto v0.3.0
 	github.com/nspcc-dev/tzhash v1.4.0
 	github.com/panjf2000/ants/v2 v2.3.0
diff --git a/go.sum b/go.sum
index 27c97f4d..51bd1a9c 100644
--- a/go.sum
+++ b/go.sum
@@ -283,8 +283,8 @@ github.com/nspcc-dev/neo-go v0.73.1-pre.0.20200303142215-f5a1b928ce09/go.mod h1:
 github.com/nspcc-dev/neo-go v0.91.0/go.mod h1:G6HdOWvzQ6tlvFdvFSN/PgCzLPN/X/X4d5hTjFRUDcc=
 github.com/nspcc-dev/neo-go v0.91.1-pre.0.20201030072836-71216865717b h1:gk5bZgpWOehaDVKI5vBDkcjXTpRkKqcvIb1h/vHnBH4=
 github.com/nspcc-dev/neo-go v0.91.1-pre.0.20201030072836-71216865717b/go.mod h1:9s7LNp2lMgf0caH2t0sam4+WT2SIauXozwP0AdBqnEo=
-github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201208072327-139660c6ff59 h1:OfeINXdkMrlfdqsVK5ECYi7vgt9TpO/R3JMQcnQndXI=
-github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201208072327-139660c6ff59/go.mod h1:G7dqincfdjBrAbL5nxVp82emF05fSVEqe59ICsoRDI8=
+github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201210152623-803c91b3eb2b h1:crUr2jA84f0cQabYAN40uTYNTlu3xI9ZoB0BUBooQTA=
+github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201210152623-803c91b3eb2b/go.mod h1:G7dqincfdjBrAbL5nxVp82emF05fSVEqe59ICsoRDI8=
 github.com/nspcc-dev/neofs-crypto v0.2.0/go.mod h1:F/96fUzPM3wR+UGsPi3faVNmFlA9KAEAUQR7dMxZmNA=
 github.com/nspcc-dev/neofs-crypto v0.2.3/go.mod h1:8w16GEJbH6791ktVqHN9YRNH3s9BEEKYxGhlFnp0cDw=
 github.com/nspcc-dev/neofs-crypto v0.3.0 h1:zlr3pgoxuzrmGCxc5W8dGVfA9Rro8diFvVnBg0L4ifM=
diff --git a/pkg/core/object/fmt.go b/pkg/core/object/fmt.go
index 042fbef3..54452d95 100644
--- a/pkg/core/object/fmt.go
+++ b/pkg/core/object/fmt.go
@@ -108,32 +108,37 @@ func (v *FormatValidator) checkOwnerKey(id *owner.ID, key []byte) error {
 }
 
 // ValidateContent validates payload content according to object type.
-func (v *FormatValidator) ValidateContent(o *object.Object) error {
+func (v *FormatValidator) ValidateContent(o *Object) error {
 	switch o.Type() {
 	case object.TypeTombstone:
 		if len(o.Payload()) == 0 {
 			return errors.Errorf("(%T) empty payload in tombstone", v)
 		}
 
-		content, err := TombstoneContentFromBytes(o.Payload())
-		if err != nil {
-			return errors.Wrapf(err, "(%T) could not parse tombstone content", err)
+		tombstone := object.NewTombstone()
+
+		if err := tombstone.Unmarshal(o.Payload()); err != nil {
+			return errors.Wrapf(err, "(%T) could not unmarshal tombstone content", v)
 		}
 
-		addrList := content.GetAddressList()
+		cid := o.ContainerID()
+		idList := tombstone.Members()
+		addrList := make([]*object.Address, 0, len(idList))
 
-		for _, addr := range addrList {
-			if addr.ContainerID() == nil || addr.ObjectID() == nil {
-				return errors.Errorf("(%T) empty address reference in tombstone", v)
+		for _, id := range idList {
+			if id == nil {
+				return errors.Errorf("(%T) empty member in tombstone", v)
 			}
-		}
 
-		tsAddr := new(object.Address)
-		tsAddr.SetContainerID(o.ContainerID())
-		tsAddr.SetObjectID(o.ID())
+			a := object.NewAddress()
+			a.SetContainerID(cid)
+			a.SetObjectID(id)
+
+			addrList = append(addrList, a)
+		}
 
 		if v.deleteHandler != nil {
-			v.deleteHandler.DeleteObjects(tsAddr, addrList...)
+			v.deleteHandler.DeleteObjects(o.Address(), addrList...)
 		}
 	}
 
diff --git a/pkg/core/object/fmt_test.go b/pkg/core/object/fmt_test.go
index 63243bdf..8c2941a3 100644
--- a/pkg/core/object/fmt_test.go
+++ b/pkg/core/object/fmt_test.go
@@ -108,28 +108,25 @@ func TestFormatValidator_Validate(t *testing.T) {
 		obj := NewRaw()
 		obj.SetType(object.TypeTombstone)
 
-		require.Error(t, v.ValidateContent(obj.Object().SDK()))
+		require.Error(t, v.ValidateContent(obj.Object()))
 
-		addr := object.NewAddress()
+		content := object.NewTombstone()
+		content.SetMembers([]*object.ID{nil})
 
-		content := NewTombstoneContent()
-		content.SetAddressList(addr)
-
-		data, err := content.MarshalBinary()
+		data, err := content.Marshal()
 		require.NoError(t, err)
 
 		obj.SetPayload(data)
 
-		require.Error(t, v.ValidateContent(obj.Object().SDK()))
+		require.Error(t, v.ValidateContent(obj.Object()))
 
-		addr.SetContainerID(testContainerID(t))
-		addr.SetObjectID(testObjectID(t))
+		content.SetMembers([]*object.ID{testObjectID(t)})
 
-		data, err = content.MarshalBinary()
+		data, err = content.Marshal()
 		require.NoError(t, err)
 
 		obj.SetPayload(data)
 
-		require.NoError(t, v.ValidateContent(obj.Object().SDK()))
+		require.NoError(t, v.ValidateContent(obj.Object()))
 	})
 }
diff --git a/pkg/core/object/tombstone.go b/pkg/core/object/tombstone.go
deleted file mode 100644
index 8ad04be9..00000000
--- a/pkg/core/object/tombstone.go
+++ /dev/null
@@ -1,163 +0,0 @@
-package object
-
-import (
-	"encoding/binary"
-	"fmt"
-	"io"
-
-	"github.com/nspcc-dev/neofs-api-go/pkg/object"
-	"github.com/nspcc-dev/neofs-api-go/util/proto"
-	"github.com/nspcc-dev/neofs-api-go/v2/refs"
-	"github.com/pkg/errors"
-)
-
-// FIXME: replace this code to neofs-api-go
-
-const addrListField = 1
-
-type TombstoneContent TombstoneContentV2
-
-type TombstoneContentV2 struct {
-	addrList []*refs.Address
-}
-
-func NewTombstoneContentFromV2(cV2 *TombstoneContentV2) *TombstoneContent {
-	return (*TombstoneContent)(cV2)
-}
-
-func NewTombstoneContent() *TombstoneContent {
-	return NewTombstoneContentFromV2(new(TombstoneContentV2))
-}
-
-func (c *TombstoneContent) MarshalBinary() ([]byte, error) {
-	return c.ToV2().StableMarshal(nil)
-}
-
-func (c *TombstoneContent) SetAddressList(v ...*object.Address) {
-	if c != nil {
-		addrV2 := make([]*refs.Address, 0, len(v))
-
-		for i := range v {
-			addrV2 = append(addrV2, v[i].ToV2())
-		}
-
-		(*TombstoneContentV2)(c).SetAddressList(addrV2)
-	}
-}
-
-func (c *TombstoneContent) GetAddressList() []*object.Address {
-	if c != nil {
-		addrV2 := (*TombstoneContentV2)(c).GetAddressList()
-		addr := make([]*object.Address, 0, len(addrV2))
-
-		for i := range addrV2 {
-			addr = append(addr, object.NewAddressFromV2(addrV2[i]))
-		}
-
-		return addr
-	}
-
-	return nil
-}
-
-func (c *TombstoneContent) ToV2() *TombstoneContentV2 {
-	return (*TombstoneContentV2)(c)
-}
-
-func (c *TombstoneContentV2) StableMarshal(buf []byte) ([]byte, error) {
-	if c == nil {
-		return make([]byte, 0), nil
-	}
-
-	if buf == nil {
-		buf = make([]byte, c.StableSize())
-	}
-
-	offset := 0
-
-	for i := range c.addrList {
-		n, err := proto.NestedStructureMarshal(addrListField, buf[offset:], c.addrList[i])
-		if err != nil {
-			return nil, err
-		}
-
-		offset += n
-	}
-
-	return buf, nil
-}
-
-func (c *TombstoneContentV2) StableSize() (sz int) {
-	if c == nil {
-		return
-	}
-
-	for i := range c.addrList {
-		sz += proto.NestedStructureSize(addrListField, c.addrList[i])
-	}
-
-	return
-}
-
-func (c *TombstoneContentV2) StableUnmarshal(data []byte) error {
-	c.addrList = c.addrList[:0]
-
-	for len(data) > 0 {
-		expPrefix, _ := proto.NestedStructurePrefix(addrListField)
-
-		prefix, ln := binary.Uvarint(data)
-		if ln <= 0 {
-			return io.ErrUnexpectedEOF
-		} else if expPrefix != prefix {
-			return errors.Errorf("wrong prefix %d", prefix)
-		}
-
-		data = data[ln:]
-
-		sz, ln := binary.Uvarint(data)
-		if ln <= 0 {
-			return io.ErrUnexpectedEOF
-		}
-
-		data = data[ln:]
-
-		addr := new(refs.Address)
-		if err := addr.Unmarshal(data[:sz]); err != nil {
-			fmt.Println(err)
-			return err
-		}
-
-		c.addrList = append(c.addrList, addr)
-
-		data = data[sz:]
-	}
-
-	return nil
-}
-
-func (c *TombstoneContentV2) SetAddressList(v []*refs.Address) {
-	if c != nil {
-		c.addrList = v
-	}
-}
-
-func (c *TombstoneContentV2) GetAddressList() []*refs.Address {
-	if c != nil {
-		return c.addrList
-	}
-
-	return nil
-}
-
-func TombstoneContentFromBytes(data []byte) (*TombstoneContent, error) {
-	if len(data) == 0 {
-		return nil, nil
-	}
-
-	cV2 := new(TombstoneContentV2)
-	if err := cV2.StableUnmarshal(data); err != nil {
-		return nil, err
-	}
-
-	return NewTombstoneContentFromV2(cV2), nil
-}
diff --git a/pkg/core/object/tombstone_test.go b/pkg/core/object/tombstone_test.go
deleted file mode 100644
index 7ca935c6..00000000
--- a/pkg/core/object/tombstone_test.go
+++ /dev/null
@@ -1,43 +0,0 @@
-package object
-
-import (
-	"crypto/sha256"
-	"testing"
-
-	"github.com/nspcc-dev/neofs-api-go/pkg/container"
-	"github.com/nspcc-dev/neofs-api-go/pkg/object"
-	"github.com/stretchr/testify/require"
-)
-
-func TestTombstoneContent_MarshalBinary(t *testing.T) {
-	cid1 := container.NewID()
-	cid1.SetSHA256([sha256.Size]byte{1, 2})
-
-	id1 := object.NewID()
-	id1.SetSHA256([sha256.Size]byte{3, 4})
-
-	addr1 := object.NewAddress()
-	addr1.SetObjectID(id1)
-	addr1.SetContainerID(cid1)
-
-	cid2 := container.NewID()
-	cid2.SetSHA256([sha256.Size]byte{5, 6})
-
-	id2 := object.NewID()
-	id2.SetSHA256([sha256.Size]byte{7, 8})
-
-	addr2 := object.NewAddress()
-	addr2.SetObjectID(id2)
-	addr2.SetContainerID(cid2)
-
-	c := NewTombstoneContent()
-	c.SetAddressList(addr1, addr2)
-
-	data, err := c.MarshalBinary()
-	require.NoError(t, err)
-
-	c2, err := TombstoneContentFromBytes(data)
-	require.NoError(t, err)
-
-	require.Equal(t, c, c2)
-}
diff --git a/pkg/services/object/put/distributed.go b/pkg/services/object/put/distributed.go
index 823f0318..81ac32cf 100644
--- a/pkg/services/object/put/distributed.go
+++ b/pkg/services/object/put/distributed.go
@@ -65,7 +65,7 @@ func (t *distributedTarget) Close() (*transformer.AccessIdentifiers, error) {
 
 	t.obj.SetPayload(payload)
 
-	if err := t.fmt.ValidateContent(t.obj.Object().SDK()); err != nil {
+	if err := t.fmt.ValidateContent(t.obj.Object()); err != nil {
 		return nil, errors.Wrapf(err, "(%T) could not validate payload content", t)
 	}