diff --git a/src/ReportingApi/Models/CspReport.cs b/src/ReportingApi/Models/CspReport.cs
index 23713a9..e5ddb05 100644
--- a/src/ReportingApi/Models/CspReport.cs
+++ b/src/ReportingApi/Models/CspReport.cs
@@ -2,7 +2,7 @@
 
 namespace ReportingApi.Models;
 
-public class CspReport : IReportBody
+public sealed record CspReport : IReportBody
 {
     [JsonPropertyName("blockedURL")]
     public string BlockedUri { get; set; } = null!;
diff --git a/src/ReportingApi/Models/ReportRequest.cs b/src/ReportingApi/Models/ReportRequest.cs
index 7480ced..f4f252b 100644
--- a/src/ReportingApi/Models/ReportRequest.cs
+++ b/src/ReportingApi/Models/ReportRequest.cs
@@ -4,7 +4,7 @@
 namespace ReportingApi.Models;
 
 [JsonConverter(typeof(ReportRequestConverter))]
-public class ReportRequest
+public record ReportRequest
 {
     [JsonPropertyName("age")]
     public int Age { get; set; }
@@ -16,7 +16,7 @@ public class ReportRequest
     public string UserAgent { get; set; } = null!;
 }
 
-public class ReportRequest<TBody> : ReportRequest
+public sealed record ReportRequest<TBody> : ReportRequest
     where TBody : class, IReportBody
 {
     [JsonPropertyName("body")]