diff --git a/object/types.proto b/object/types.proto
index 68c42e4..33e6bfa 100644
--- a/object/types.proto
+++ b/object/types.proto
@@ -31,6 +31,8 @@ message ExtendedHeader {
     IntegrityHeader Integrity = 9;
     // StorageGroup contains meta information for the data audit
     storagegroup.StorageGroup StorageGroup = 10;
+    // CreationEpoch carries number of NeoFS epoch on which the object was created.
+    uint64 CreationEpoch = 11;
 }
 
 message Tombstone {}
@@ -43,8 +45,6 @@ message SystemHeader {
     refs.Address Address = 2;
     // OwnerID is a wallet address
     bytes OwnerID = 3;
-    // CreationEpoch carries number of NeoFS epoch on which the object was created.
-    uint64 CreationEpoch = 4;
 }
 
 message IntegrityHeader {
diff --git a/proto-docs/object.md b/proto-docs/object.md
index 73e2a75..eb108b6 100644
--- a/proto-docs/object.md
+++ b/proto-docs/object.md
@@ -386,6 +386,7 @@ Attribute groups the parameters of the object attributes.
 | HomoHash | [bytes](#bytes) |  | HomoHash is a homomorphic hash of original object payload |
 | Integrity | [IntegrityHeader](#object.IntegrityHeader) |  | Integrity header with checksum of all above headers in the object |
 | StorageGroup | [storagegroup.StorageGroup](#storagegroup.StorageGroup) |  | StorageGroup contains meta information for the data audit |
+| CreationEpoch | [uint64](#uint64) |  | CreationEpoch carries number of NeoFS epoch on which the object was created. |
 
 
 <a name="object.Header"></a>
@@ -452,7 +453,6 @@ SplitHeader groups information about spawning the object through a payload split
 | PayloadLength | [uint64](#uint64) |  | PayloadLength is an object payload length |
 | Address | [refs.Address](#refs.Address) |  | Address carries object address in the NeoFS system. It encapsulates the object and the container identifiers. |
 | OwnerID | [bytes](#bytes) |  | OwnerID is a wallet address |
-| CreationEpoch | [uint64](#uint64) |  | CreationEpoch carries number of NeoFS epoch on which the object was created. |
 
 
 <a name="object.Tombstone"></a>