diff --git a/background.js b/background.js
index 7297909..a07a4d9 100644
--- a/background.js
+++ b/background.js
@@ -151,7 +151,7 @@ const HUMAN_STEP_DELAY_MIN = 700;
 const HUMAN_STEP_DELAY_MAX = 2200;
 const STEP6_MAX_ATTEMPTS = 3;
 const STEP7_MAIL_POLLING_RECOVERY_MAX_ATTEMPTS = 8;
-const OAUTH_FLOW_TIMEOUT_MS = 6 * 60 * 1000;
+const OAUTH_FLOW_TIMEOUT_MS = 5 * 60 * 1000;
 const SUB2API_STEP1_RESPONSE_TIMEOUT_MS = 90000;
 const SUB2API_STEP9_RESPONSE_TIMEOUT_MS = 120000;
 const DEFAULT_SUB2API_URL = 'https://sub2api.hisence.fun/admin/accounts';
@@ -6836,7 +6836,7 @@ async function startOAuthFlowTimeoutWindow(options = {}) {
     oauthFlowDeadlineAt: deadlineAt,
     oauthFlowDeadlineSourceUrl: normalizeOAuthFlowSourceUrl(options.oauthUrl),
   });
-  await addLog(`步骤 ${step}：已拿到新的 OAuth 登录地址，开始 6 分钟倒计时。`, 'info');
+  await addLog(`步骤 ${step}：已拿到新的 OAuth 登录地址，开始 ${Math.round(OAUTH_FLOW_TIMEOUT_MS / 60000)} 分钟倒计时。`, 'info');
   return deadlineAt;
 }
 
diff --git a/tests/background-auth-chain-guard.test.js b/tests/background-auth-chain-guard.test.js
index 3fec903..0353613 100644
--- a/tests/background-auth-chain-guard.test.js
+++ b/tests/background-auth-chain-guard.test.js
@@ -162,7 +162,7 @@ return {
 test('oauth timeout budget ignores stale deadlines from an old oauth url', async () => {
   const api = new Function(`
 const LOG_PREFIX = '[test]';
-const OAUTH_FLOW_TIMEOUT_MS = 6 * 60 * 1000;
+const OAUTH_FLOW_TIMEOUT_MS = 5 * 60 * 1000;
 ${extractFunction('normalizeOAuthFlowDeadlineAt')}
 ${extractFunction('normalizeOAuthFlowSourceUrl')}
 ${extractFunction('getOAuthFlowRemainingMs')}