diff --git a/src/services/apis/chatgpt-web.mjs b/src/services/apis/chatgpt-web.mjs
index 961fc3c..f5914a3 100644
--- a/src/services/apis/chatgpt-web.mjs
+++ b/src/services/apis/chatgpt-web.mjs
@@ -222,6 +222,7 @@ export async function generateAnswersWithChatgptWebApi(port, question, session,
     proofToken = generateProofToken(
       requirements.proofofwork.seed,
       requirements.proofofwork.difficulty,
+      navigator.userAgent,
     )
   }