diff --git a/proto/utxorpc/v1alpha/cardano/cardano.proto b/proto/utxorpc/v1alpha/cardano/cardano.proto
index 10fc893..f6bf062 100644
--- a/proto/utxorpc/v1alpha/cardano/cardano.proto
+++ b/proto/utxorpc/v1alpha/cardano/cardano.proto
@@ -30,6 +30,11 @@ message TxInput {
   Redeemer redeemer = 4; // Redeemer for the Plutus script.
 }
 
+// Represents a list of cardano addresses
+message AddressArray {
+  repeated bytes items = 1; // Array of Cardano addresses
+}
+
 // Represents a transaction output in the Cardano blockchain.
 message TxOutput {
   bytes address = 1; // Address receiving the output.
diff --git a/proto/utxorpc/v1alpha/query/query.proto b/proto/utxorpc/v1alpha/query/query.proto
index 1fe074f..3965d16 100644
--- a/proto/utxorpc/v1alpha/query/query.proto
+++ b/proto/utxorpc/v1alpha/query/query.proto
@@ -28,6 +28,11 @@ message TxoRef {
   uint32 index = 2; // Output index.
 }
 
+// An array of TxoRefs
+message TxoRefArray {
+  repeated TxoRef items = 1;
+}
+
 // Request to get the chain parameters
 message ReadParamsRequest {
   google.protobuf.FieldMask field_mask = 1; // Field mask to selectively return fields in the parsed response.
@@ -99,7 +104,10 @@ message AnyUtxoData {
 
 // Request to get specific UTxOs
 message ReadUtxosRequest {
-  repeated TxoRef keys = 1; // List of keys UTxOs.
+  oneof query_args {
+    TxoRefArray txoRefs = 1; // Array of Tx Output references
+    utxorpc.v1alpha.cardano.AddressArray cardano_addresses = 2; // Array of Cardano addresses
+  }
   google.protobuf.FieldMask field_mask = 2; // Field mask to selectively return fields.
 }