diff --git a/src/corelib/Core/Domain/Volume.cs b/src/corelib/Core/Domain/Volume.cs
index 58abcbfce..7ceedafe3 100644
--- a/src/corelib/Core/Domain/Volume.cs
+++ b/src/corelib/Core/Domain/Volume.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Runtime.Serialization;
 
 namespace net.openstack.Core.Domain
@@ -25,7 +26,7 @@ public class Volume
         public string SnapshotId { get; set; }
 
         [DataMember]
-        public string[] Attachments { get; set; }
+        public Dictionary<string, string>[] Attachments { get; set; }
 
         [DataMember]
         public string Status { get; set; }