I have added following line to update jQuery in header file
<script src='https://code.jquery.com/jquery-3.1.1.min.js'></script>
<script> $(document).ready(function() { alert('Yup I am working'); }); </script>
It gives alert 'Yup I am working'. But when I check jQuery version on console using jQuery().jquery it shows 2.1.3. Can you please tell me why jQuery is not updating?