diff --git a/popup.js b/popup.js
index e1268e5..cfd692f 100644
--- a/popup.js
+++ b/popup.js
@@ -110,7 +110,7 @@ document.getElementById('test-key-btn').addEventListener('click', async () => {
 
   try {
     const response = await fetch(
-      `https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash:generateContent?key=${apiKey}`,
+      `https://generativelanguage.googleapis.com/v1beta/models/gemini-flash-lite-latest:generateContent?key=${apiKey}`,
       {
         method: 'POST',
         headers: { 'Content-Type': 'application/json' },