After getting your website optimized or making any new updates - it's best to submit/resubmit your XML sitemap to Google Webmaster Tools.
Google will take about 2-3 days to crawl and re-index your site. The benefit to this is that, your site will show up in Google with all these new settings quicker.If you need help setting up a Google Webmaster’s account, visit: https://www.youtube.com/watch?v=5cPNZ3iH9hU
- On your Webmaster Tools home page, select your site.
- In the left sidebar, click Site configuration and then Sitemaps.
- Click the Add/Test Sitemap button in the top right.
- Enter /system/feeds/sitemap into the text box that appears.
- Click Submit Sitemap.
If you'd like a video tutorial: https://www.youtube.com/watch?v=DZHYQ0otfBk