I want to upgrade magento 2.1.6 to 2.1.9 ?How to upgrate it?
Bellow admin site display message .
Important Magento Open Source 2.1.9 and 2.0.16 Security Enhancements – 9/14/2017
Magento Open Source 2.1.9 and 2.0.16 include critical security enhancements and address the September 1 changes to USPS shipping. Please update your s ite as soon as possible. More information is available in the release notes: