diff --git a/src/component/CaptchaComp.js b/src/component/CaptchaComp.js
index d98eb26..c3c96ca 100644
--- a/src/component/CaptchaComp.js
+++ b/src/component/CaptchaComp.js
@@ -33,6 +33,10 @@ class CaptchaComp {
         }
     }
 
+    sleep(m) {
+        return new Promise(r => setTimeout(r, m))
+    }
+
     isCaptchaPage(html) {
         return html.indexOf('hcaptcha') > -1 || html.indexOf('www.google.com/recaptcha/api2/anchor') > -1
     }