diff --git a/src/Infrastructure/BotSharp.Abstraction/Messaging/Models/RichContent/ElementButton.cs b/src/Infrastructure/BotSharp.Abstraction/Messaging/Models/RichContent/ElementButton.cs
index bc13660a..294b1835 100644
--- a/src/Infrastructure/BotSharp.Abstraction/Messaging/Models/RichContent/ElementButton.cs
+++ b/src/Infrastructure/BotSharp.Abstraction/Messaging/Models/RichContent/ElementButton.cs
@@ -20,4 +20,7 @@ public class ElementButton
 
     [JsonPropertyName("is_secondary")]
     public bool IsSecondary { get; set; }
+
+    [JsonPropertyName("post_action_disclaimer")]
+    public string? PostActionDisclaimer { get; set; }
 }