Support and celebrate open source. Earn a limited edition T-shirt.

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Hacktoberfest is created in partnership with

Get involved

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Submit your open-source project

Apply the label "Hacktoberfest" to issues in your GitHub-hosted project that are ready for new contributors to work on. Learn more about what makes an issue a good fit.

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Contribute to other open-source projects

Submit four pull requests to win a free T-shirt. Browse issues labeled "Hacktoberfest" on GitHub for other projects.

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Featured Projects

You can contribute to any project on GitHub. If you need help finding one, here's a few we love:

Browse more projects on GitHub

What you need to know


Event details

  • Hacktoberfest is open to everyone in our global community!
  • Pull requests can be made in any GitHub-hosted repositories/projects.
  • You can sign up anytime between October 1 and October 31.


To get a shirt, you must make four pull requests between October 1-31. Pull requests can be to any public repo on GitHub, not just the ones we've highlighted. Pull requests reported by maintainers as spam or that are automated will be marked as invalid and won’t count towards the shirt.

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Useful Tips

Here are things to keep in mind when contributing:

  • A contribution can be anything—fixing bugs, creating new features, or updating and writing documentation.
  • Look for a repo's file for contribution guidelines and instructions.

Here are tips for creating a good Hacktoberfest issue in your project:

  • Add a file with contribution guidelines to your repo.
  • Choose issues that have a well-defined scope and are self-contained.
  • They should serve as good introductions to the codebase.
  • Consider adopting a code of conduct to foster a greater sense of community.

Have questions?

Get in touch with our team by sending an email to

Getting Started

Local events

Connect with fellow Hacktoberfest contributors near you! Organize or attend a Hacktoberfest-themed meetup.

Share Hacktoberfest with your friends!