diff --git a/src/main/java/org/ntlab/tampoposerver/models/ChatRequest.java b/src/main/java/org/ntlab/tampoposerver/models/ChatRequest.java
index 14eab95..15aa63a 100644
--- a/src/main/java/org/ntlab/tampoposerver/models/ChatRequest.java
+++ b/src/main/java/org/ntlab/tampoposerver/models/ChatRequest.java
@@ -1,21 +1,21 @@
 package org.ntlab.tampoposerver.models;
 
 public class ChatRequest {
-    private String chatRequestId;
+    private Integer chatRequestId;
     private String senderId;
     private String receiverId;
 
-    public ChatRequest(String chatRequestId, String senderId, String receiverId) {
+    public ChatRequest(Integer chatRequestId, String senderId, String receiverId) {
         this.chatRequestId = chatRequestId;
         this.senderId = senderId;
         this.receiverId = receiverId;
     }
 
-    public String getChatRequestId() {
+    public Integer getChatRequestId() {
         return chatRequestId;
     }
 
-    public void setChatRequestId(String chatRequestId) {
+    public void setChatRequestId(Integer chatRequestId) {
         this.chatRequestId = chatRequestId;
     }