Upgrading from 3.x to 4.x
Upgrading from an older version of Jekyll? A few things have changed in Jekyll 4 that you’ll want to know about.
Before we dive in, you need to have at least Ruby 2.3.0 installed. Run the following in your terminal to check
If you’re using Ruby >= 2.3.0, go ahead and fetch the latest version of Jekyll:
gem update jekyll
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