Updating Magento 2.1.x to a Newer Version

To update Magento 2.1.x to a newer version, say your current Magento installation is version 2.1.2 Community Edition, and you would like to update your Magento to the latest version 2.1.3 Community Edition, then use the following commands. Firstly open up your terminals and execute command as below:

Note: Don't use sudo while using composer for the reasons best explained here: http://bit.ly/2rDTRPk

 composer require magento/product-community-edition 2.1.3 --no-update  
 composer update  
 rm -rf var/di/* var/generation/*  
 php bin/magento cache:clean  
 php bin/magento cache:flush  
 php bin/magento setup:upgrade  
 php bin/magento setup:di:compile  
 php bin/magento indexer:reindex  

Same method can be applied for Updating Magento from:

• Magento 2.1.3 to Magento 2.1.4
• Magento 2.1.4 to Magento 2.1.5 and so on...