diff --git a/proto-docs/storagegroup.md b/proto-docs/storagegroup.md
index 7522902..af34ee3 100644
--- a/proto-docs/storagegroup.md
+++ b/proto-docs/storagegroup.md
@@ -34,6 +34,7 @@
 | ValidationDataSize | [uint64](#uint64) |  | ValidationDataSize is size of the all object's payloads included into storage group |
 | ValidationHash | [bytes](#bytes) |  | ValidationHash is homomorphic hash of all object's payloads included into storage group |
 | lifetime | [StorageGroup.Lifetime](#storagegroup.StorageGroup.Lifetime) |  | Lifetime is time until storage group is valid |
+| Members | [refs.ObjectID](#refs.ObjectID) | repeated | Members carries the list of identifiers of the object storage group members. The list is strictly ordered. |
 
 
 <a name="storagegroup.StorageGroup.Lifetime"></a>
diff --git a/storagegroup/types.proto b/storagegroup/types.proto
index fde33aa..711d72c 100644
--- a/storagegroup/types.proto
+++ b/storagegroup/types.proto
@@ -4,6 +4,7 @@ option go_package = "github.com/nspcc-dev/neofs-api-go/storagegroup";
 option csharp_namespace = "NeoFS.API.StorageGroup";
 
 import "github.com/gogo/protobuf/gogoproto/gogo.proto";
+import "refs/types.proto";
 
 option (gogoproto.stable_marshaler_all) = true;
 
@@ -33,4 +34,8 @@ message StorageGroup {
 
     // Lifetime is time until storage group is valid
     Lifetime lifetime = 3 [(gogoproto.customname) = "Lifetime"];
+
+    // Members carries the list of identifiers of the object storage group members.
+    // The list is strictly ordered.
+    repeated refs.ObjectID Members = 4;
 }