diff --git a/README.md b/README.md
index 367c7a2..2cfe1f9 100644
--- a/README.md
+++ b/README.md
@@ -699,6 +699,13 @@ ChatGPT 雖然很厲害，但也有它的極限，所以我們要加強自己的
 ### 1.2.8 版
 
 送審日期：2024/08/30
-通過日期：2024/09/02
+通過日期：2024/08/31
 
 - 修正送出按鈕，因官方改版造成的問題
+
+### 1.2.9 版
+
+送審日期：2024/08/31
+通過日期：2024/09/02
+
+- 修正 chatGPT 4o 送出按鈕的定位問題
diff --git a/js/content.js b/js/content.js
index 99017e6..65a74e4 100644
--- a/js/content.js
+++ b/js/content.js
@@ -3847,8 +3847,8 @@ function findGroupAndIndex(promptId) {
   }
   
   function sendButton(){
-    let sendButton = chatInput()?.parentElement?.querySelector("button:last-child") ||
-    chatInput()?.parentElement?.parentElement?.querySelector("button:last-child") 
+    let sendButton = document.querySelector('button[data-testid="send-button"]') ||
+    document.querySelector("#prompt-textarea")?.parentElement?.parentElement?.querySelectorAll('button')[document.querySelector("#prompt-textarea")?.parentElement?.parentElement?.querySelectorAll('button')?.length-1] 
     if(
       supportGemini &&
       !supportClaude
diff --git a/manifest.json b/manifest.json
index 0a5dcf7..098dc44 100644
--- a/manifest.json
+++ b/manifest.json
@@ -3,7 +3,7 @@
   "name": "__MSG_extension_name__",
   "description": "__MSG_extension_description__",
   "author": "Joe",
-  "version": "1.2.8",
+  "version": "1.2.9",
   "default_locale": "en",
   "icons": {
     "16": "images/icon/16.png",