1.Check the version of Ruby installed on your Mac ruby -v 2.Install the Ruby Version Manager rvm. curl -L https://get.rvm.io | bash -s stable 3.Install the latest version of Ruby rvm install ruby- lastest_version 4.rvm use ruby- version 5.sudo gem install cocoapods if your faceing any issue with installing rvm. 1.Check the version of brew installed on your Mac brew --version 2.If Homebrew is not installed, you will need to install it first. /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)" 3.Retry Ruby Installation rvm install ruby- lastest_version That's it!!