diff --git a/both/models/message.model.ts b/both/models/message.model.ts
index 1165f7f..c30bc6f 100644
--- a/both/models/message.model.ts
+++ b/both/models/message.model.ts
@@ -1,5 +1,6 @@
 export interface Message {
   _id?: string;
+  chatId?: string;
   content?: string;
   createdAt?: Date;
 }
\ No newline at end of file