diff --git a/wallet/v1/msg.proto b/wallet/v1/msg.proto
index 3ee01ea..30c83f4 100644
--- a/wallet/v1/msg.proto
+++ b/wallet/v1/msg.proto
@@ -470,3 +470,10 @@ message Commission {
   string updated_at = 10;
   string created_at = 11;
 }
+
+message LockAssetReq{
+  int64 asset_id = 1;
+  double amount = 2;
+  auth.v1.InternalIAM iam = 3;
+  optional auth.v1.TFA tfa = 4; // if request is not internal
+}
diff --git a/wallet/v1/srv.proto b/wallet/v1/srv.proto
index 4d36ee2..d5a6cfc 100644
--- a/wallet/v1/srv.proto
+++ b/wallet/v1/srv.proto
@@ -46,4 +46,7 @@ service WalletService {
   // Assets routing
   rpc InternalTransferAsset(TransferAssetReq) returns (TransferAssetRes);
   rpc ExternalTransferAsset(TransferAssetReq) returns (TransferAssetRes);
+
+  rpc LockAsset(LockAssetReq) returns (base.v1.StatusRes);
+  rpc ReleaseAsset(LockAssetReq) returns (base.v1.StatusRes);
 }