Add this to your functions.php

function my_init()   
{  
    if (!is_admin())   
    {  
        wp_deregister_script('jquery');  
  
        // Load a copy of jQuery from the Google API CDN  
        // The last parameter set to TRUE states that it should be loaded  
        // in the footer.  
        wp_register_script('jquery', 'http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js', FALSE, '1.11.0', TRUE);  
  
        wp_enqueue_script('jquery');  
    }  
}  
add_action('init', 'my_init');