diff --git a/Ktisis.Common/Models/GoogleCloud/Tasks/CloudTaskHttpRequest.cs b/Ktisis.Common/Models/GoogleCloud/Tasks/CloudTaskHttpRequest.cs
index 0e49443..ac0de3b 100644
--- a/Ktisis.Common/Models/GoogleCloud/Tasks/CloudTaskHttpRequest.cs
+++ b/Ktisis.Common/Models/GoogleCloud/Tasks/CloudTaskHttpRequest.cs
@@ -1,12 +1,14 @@
+using System.Collections.ObjectModel;
+
 namespace Ktisis.Common.Models.GoogleCloud.Tasks;
 
 public class CloudTaskHttpRequest
 {
     public required string Url { get; init; }
     public readonly string HttpMethod = "POST";
-    public readonly Dictionary<string, string> Headers = new()
+    public readonly ReadOnlyDictionary<string, string> Headers = new Dictionary<string, string>
     {
         { "Content-Type", "application/json" },
-    };
+    }.AsReadOnly();
     public required string Body { get; init; }
 }