Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

March 2019 Release Notes


  • We’ve continued to work on improving our recently launched click-based relevancy to boost search results relevance ranking for our indexing customers. As always, it’s important to periodically review your site’s Best Bets and keep your sitemaps up-to-date with latest <lastmod> date metadata.
  • We continued to upgrade components of our service, including ElasticSearch, Rails, and Ruby to improve the overall performance of our indexing system.
  • We launched a new Search Site Launch Guide to make it easier to go live with
  • Released new documentation to make it easier to maintain your indexed content with

Fixes and Chores

  • We mitigated potential security vulnerabilities associated with Ruby gems.
  • We applied high priority Ubuntu patches.
April 19, 2019