How To Update Ruby Gems

In this blog post, we will discuss how to update your Ruby Gems, which is essential to ensure that your applications are running with the latest features, performance improvements, and security patches.

What are Ruby Gems?

Ruby Gems are packages (libraries) that provide additional functionality to your Ruby applications. They allow you to quickly add new features and functionality to your projects without having to write the code from scratch. Some popular Ruby Gems include Rails, Devise, and RSpec.

Why should you update Ruby Gems?

There are several reasons to keep your Ruby Gems up-to-date:

  • Security patches: Gem updates often include fixes for security vulnerabilities, which can keep your applications more secure.
  • New features: Updating gems can give you access to new features and improvements that have been added since the previous version.
  • Bug fixes: Gem updates can also include fixes for any bugs or issues that were reported in previous versions.
  • Performance improvements: Updated gems may also come with performance optimizations, making your applications run more efficiently.

Updating Ruby Gems

Now that you know the importance of keeping your Ruby Gems up-to-date, let’s discuss how to update them.

1. Update your RubyGems version

First, you should ensure that you are running the latest version of RubyGems itself. To do this, open your terminal and run the following command:

gem update –system

This command will update RubyGems to the latest version, ensuring that you can enjoy the latest features and improvements.

2. Update individual gems

To update a specific gem, you can use the gem update command followed by the gem’s name:

gem update [gem_name]

For example, to update the Rails gem, you would run:

gem update rails

3. Update all gems

To update all the gems installed on your system, simply run the following command:

gem update

This command will update all your installed gems to their latest versions.

4. Using Bundler to update gems in your project

If you’re working on a Ruby project that uses Bundler to manage its dependencies, you can update all the gems specified in your Gemfile by running:

bundle update

To update a specific gem in your project with Bundler, you can use the following command:

bundle update [gem_name]

For example, to update the Devise gem in your project:

bundle update devise


Keeping your Ruby Gems up-to-date is crucial for maintaining the security, performance, and functionality of your applications. By following the steps outlined in this blog post, you can ensure that your projects are always running with the latest and greatest Ruby Gems available. Happy coding!