recaptcha v1 is shutdown

[insaurabh]

How to update the recaptcaha to new version.

I tried to change in
/app/code/community/Fontis/Recaptcha/controllers/AccountController.php

From this 
// check response
          //  $resp = Mage::helper("fontis_recaptcha")->recaptcha_check_answer(  $privatekey,
          //      $_SERVER["REMOTE_ADDR"],
          //      $_POST["recaptcha_challenge_field"],
           //     $_POST["recaptcha_response_field"]
//           );

To this

$resp = Mage::helper("fontis_recaptcha")->recaptcha_check_answer(  $privatekey,
                $_SERVER["REMOTE_ADDR"],
                $_POST["recaptcha_challenge_field"],
                $_POST["g-recaptcha-response"]
            );

still getting same issues , is there any other file we need to update