diff --git a/src/services/apis/chatgpt-web.mjs b/src/services/apis/chatgpt-web.mjs
index 67ee05e..89f11c0 100644
--- a/src/services/apis/chatgpt-web.mjs
+++ b/src/services/apis/chatgpt-web.mjs
@@ -113,6 +113,13 @@ export async function generateAnswersWithChatgptWebApi(port, question, session,
       timezone_offset_min: new Date().getTimezoneOffset(),
       variant_purpose: 'none',
       history_and_training_disabled: config.disableWebModeHistory,
+      arkose_token: usedModel.startsWith('gpt-4')
+        ? `${Array.from({ length: 17 }, () => Math.floor(Math.random() * 16).toString(16)).join(
+            '',
+          )}|r=ap-southeast-1|meta=3|meta_width=300|metabgclr=transparent|metaiconclr=%23555555|guitextcolor=%23000000|pk=35536E1E-65B4-4D96-9D97-6ADB7EFF8147|at=40|sup=1|rid=${
+            Math.floor(Math.random() * 99) + 1
+          }|ag=101|cdn_url=https%3A%2F%2Ftcr9i.chat.openai.com%2Fcdn%2Ffc|lurl=https%3A%2F%2Faudio-ap-southeast-1.arkoselabs.com|surl=https%3A%2F%2Ftcr9i.chat.openai.com|smurl=https%3A%2F%2Ftcr9i.chat.openai.com%2Fcdn%2Ffc%2Fassets%2Fstyle-manager`
+        : undefined,
     }),
     onMessage(message) {
       console.debug('sse message', message)