diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7ab694e..8f7a84e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,8 @@
 ## [Unreleased]
 
 ### Added
+- Add impersonate flag to bearer token (#17)
+
 ### Fixed
 ### Changed
 ### Updated
diff --git a/acl/convert.go b/acl/convert.go
index d42aebd..3020f4d 100644
--- a/acl/convert.go
+++ b/acl/convert.go
@@ -427,6 +427,7 @@ func (bt *BearerTokenBody) ToGRPCMessage() grpc.Message {
 		m.SetOwnerId(bt.ownerID.ToGRPCMessage().(*refsGRPC.OwnerID))
 		m.SetLifetime(bt.lifetime.ToGRPCMessage().(*acl.BearerToken_Body_TokenLifetime))
 		m.SetEaclTable(bt.eacl.ToGRPCMessage().(*acl.EACLTable))
+		m.SetImpersonate(bt.impersonate)
 	}
 
 	return m
@@ -479,6 +480,8 @@ func (bt *BearerTokenBody) FromGRPCMessage(m grpc.Message) error {
 		err = bt.eacl.FromGRPCMessage(eacl)
 	}
 
+	bt.impersonate = v.GetAllowImpersonate()
+
 	return err
 }
 
diff --git a/acl/grpc/types.go b/acl/grpc/types.go
index e1e5336..b07f893 100644
--- a/acl/grpc/types.go
+++ b/acl/grpc/types.go
@@ -84,6 +84,11 @@ func (m *BearerToken_Body) SetLifetime(v *BearerToken_Body_TokenLifetime) {
 	m.Lifetime = v
 }
 
+// SetImpersonate allows impersonate.
+func (m *BearerToken_Body) SetImpersonate(v bool) {
+	m.AllowImpersonate = v
+}
+
 // SetBody sets bearer token body.
 func (m *BearerToken) SetBody(v *BearerToken_Body) {
 	m.Body = v
diff --git a/acl/grpc/types.pb.go b/acl/grpc/types.pb.go
index 3581b88..583f89a 100644
Binary files a/acl/grpc/types.pb.go and b/acl/grpc/types.pb.go differ
diff --git a/acl/marshal.go b/acl/marshal.go
index c56b90f..cd6c6dd 100644
--- a/acl/marshal.go
+++ b/acl/marshal.go
@@ -31,6 +31,7 @@ const (
 	bearerTokenBodyACLField      = 1
 	bearerTokenBodyOwnerField    = 2
 	bearerTokenBodyLifetimeField = 3
+	bearerTokenBodyImpersonate   = 4
 
 	bearerTokenBodyField      = 1
 	bearerTokenSignatureField = 2
@@ -251,7 +252,8 @@ func (bt *BearerTokenBody) StableMarshal(buf []byte) []byte {
 
 	offset += protoutil.NestedStructureMarshal(bearerTokenBodyACLField, buf[offset:], bt.eacl)
 	offset += protoutil.NestedStructureMarshal(bearerTokenBodyOwnerField, buf[offset:], bt.ownerID)
-	protoutil.NestedStructureMarshal(bearerTokenBodyLifetimeField, buf[offset:], bt.lifetime)
+	offset += protoutil.NestedStructureMarshal(bearerTokenBodyLifetimeField, buf[offset:], bt.lifetime)
+	protoutil.BoolMarshal(bearerTokenBodyImpersonate, buf[offset:], bt.impersonate)
 
 	return buf
 }
@@ -264,6 +266,7 @@ func (bt *BearerTokenBody) StableSize() (size int) {
 	size += protoutil.NestedStructureSize(bearerTokenBodyACLField, bt.eacl)
 	size += protoutil.NestedStructureSize(bearerTokenBodyOwnerField, bt.ownerID)
 	size += protoutil.NestedStructureSize(bearerTokenBodyLifetimeField, bt.lifetime)
+	size += protoutil.BoolSize(bearerTokenBodyImpersonate, bt.impersonate)
 
 	return size
 }
diff --git a/acl/types.go b/acl/types.go
index 71d83ce..1524e7b 100644
--- a/acl/types.go
+++ b/acl/types.go
@@ -52,6 +52,8 @@ type BearerTokenBody struct {
 	ownerID *refs.OwnerID
 
 	lifetime *TokenLifetime
+
+	impersonate bool
 }
 
 type BearerToken struct {
@@ -340,6 +342,18 @@ func (bt *BearerTokenBody) SetLifetime(v *TokenLifetime) {
 	bt.lifetime = v
 }
 
+func (bt *BearerTokenBody) GetImpersonate() bool {
+	if bt != nil {
+		return bt.impersonate
+	}
+
+	return false
+}
+
+func (bt *BearerTokenBody) SetImpersonate(v bool) {
+	bt.impersonate = v
+}
+
 func (bt *BearerToken) GetBody() *BearerTokenBody {
 	if bt != nil {
 		return bt.body
diff --git a/container/grpc/service_grpc.pb.go b/container/grpc/service_grpc.pb.go
index 3af498b..1de8b5f 100644
Binary files a/container/grpc/service_grpc.pb.go and b/container/grpc/service_grpc.pb.go differ
diff --git a/object/grpc/service.go b/object/grpc/service.go
index 44b5f4a..74dc168 100644
--- a/object/grpc/service.go
+++ b/object/grpc/service.go
@@ -109,7 +109,7 @@ func (m *PutRequest_Body_Init) SetHeader(v *Header) {
 }
 
 // SetCopiesNumber sets number of the copies to save.
-func (m *PutRequest_Body_Init) SetCopiesNumber(v uint32) {
+func (m *PutRequest_Body_Init) SetCopiesNumber(v []uint32) {
 	m.CopiesNumber = v
 }
 
diff --git a/object/grpc/service.pb.go b/object/grpc/service.pb.go
index 207b0b0..6ba4090 100644
Binary files a/object/grpc/service.pb.go and b/object/grpc/service.pb.go differ
diff --git a/object/grpc/service_grpc.pb.go b/object/grpc/service_grpc.pb.go
index 23906d6..6b1c32a 100644
Binary files a/object/grpc/service_grpc.pb.go and b/object/grpc/service_grpc.pb.go differ
diff --git a/object/marshal.go b/object/marshal.go
index b918e69..7a89b97 100644
--- a/object/marshal.go
+++ b/object/marshal.go
@@ -516,7 +516,7 @@ func (r *PutObjectPartInit) StableMarshal(buf []byte) []byte {
 	offset += proto.NestedStructureMarshal(putReqInitObjectIDField, buf[offset:], r.id)
 	offset += proto.NestedStructureMarshal(putReqInitSignatureField, buf[offset:], r.sig)
 	offset += proto.NestedStructureMarshal(putReqInitHeaderField, buf[offset:], r.hdr)
-	proto.UInt32Marshal(putReqInitCopiesNumField, buf[offset:], r.copyNum)
+	proto.RepeatedUInt32Marshal(putReqInitCopiesNumField, buf[offset:], r.copyNum)
 
 	return buf
 }
@@ -529,7 +529,9 @@ func (r *PutObjectPartInit) StableSize() (size int) {
 	size += proto.NestedStructureSize(putReqInitObjectIDField, r.id)
 	size += proto.NestedStructureSize(putReqInitSignatureField, r.sig)
 	size += proto.NestedStructureSize(putReqInitHeaderField, r.hdr)
-	size += proto.UInt32Size(putReqInitCopiesNumField, r.copyNum)
+
+	arrSize, _ := proto.RepeatedUInt32Size(putReqInitCopiesNumField, r.copyNum)
+	size += arrSize
 
 	return size
 }
diff --git a/object/test/generate.go b/object/test/generate.go
index 0816ffc..32d7a3c 100644
--- a/object/test/generate.go
+++ b/object/test/generate.go
@@ -216,7 +216,7 @@ func GeneratePutObjectPartInit(empty bool) *object.PutObjectPartInit {
 	m := new(object.PutObjectPartInit)
 
 	if !empty {
-		m.SetCopiesNumber(234)
+		m.SetCopiesNumber([]uint32{234})
 		m.SetObjectID(refstest.GenerateObjectID(false))
 	}
 
diff --git a/object/types.go b/object/types.go
index f076b74..a40de57 100644
--- a/object/types.go
+++ b/object/types.go
@@ -128,7 +128,7 @@ type PutObjectPartInit struct {
 
 	hdr *Header
 
-	copyNum uint32
+	copyNum []uint32
 }
 
 type PutObjectPartChunk struct {
@@ -894,15 +894,15 @@ func (r *PutObjectPartInit) SetHeader(v *Header) {
 	r.hdr = v
 }
 
-func (r *PutObjectPartInit) GetCopiesNumber() uint32 {
+func (r *PutObjectPartInit) GetCopiesNumber() []uint32 {
 	if r != nil {
 		return r.copyNum
 	}
 
-	return 0
+	return nil
 }
 
-func (r *PutObjectPartInit) SetCopiesNumber(v uint32) {
+func (r *PutObjectPartInit) SetCopiesNumber(v []uint32) {
 	r.copyNum = v
 }
 
diff --git a/pkg/tracing/grpc.go b/pkg/tracing/grpc.go
index cea59b0..884ecb2 100644
--- a/pkg/tracing/grpc.go
+++ b/pkg/tracing/grpc.go
@@ -51,7 +51,6 @@ func NewGRPCStreamClientInterceptor() grpc.StreamClientInterceptor {
 		strWrp := newgRPCClientStream(str, desc, finished, done)
 
 		go func() {
-			defer close(finished)
 			defer close(done)
 			defer span.End()