Unable to change title using hook_menu_alter()

I’m trying to change the title of the ‘Request new password’ page. This is defined in user.module: $items[‘user/password’] = array( ‘title’ => ‘Request new password’, ‘page callback’ => ‘drupal_get_form’, ‘page arguments’ => array(‘user_pass’), ‘access callback’ => TRUE, ‘type’ => MENU_LOCAL_TASK, ‘file’ => ‘user.pages.inc’, ); So[…]