get_avatar_url() with https

Hello,

I’m using get_avatar_url() to return user avatar url, but it returns it as http instead of https. My desired result is to have it return the url as https.

This is what I’ve tried:

$user = wp_get_current_user();
$args = array('scheme' => 'https'); 
$chat_picture_url = get_avatar_url($user->ID, $args);

However, the url is still being returned as http.

Is there anything wrong with my code that would cause it to fail? I don’t have any logged php errors.

Thanks!