Support open source and earn a limited edition T-shirt.

Check back next October for details on how to participate!

Hacktoberfest is a month-long celebration of open source software in partnership with

Global Stats

Challenge Completions To-Date

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Pull Requests Opened

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Participating Repositories

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Pull Requests Opened

Most Popular Day to Contribute:

Highest Pull Request Count Repos

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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 in any timezone. Pull requests can be to any public repo on GitHub, not just the ones we’ve highlighted. The pull request must contain commits you made yourself. Pull requests reported by maintainers as spam or that are automated will be marked as invalid and won’t count towards the shirt.

Hacktoberfest 2017

Hacktoberfest projects

You can contribute to any project on GitHub. Here's a few looking for some help:


How can my project get involved?

Apply the label ”Hacktoberfest” to issues in your GitHub project that are ready for new contributors to work on.

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.
  • Consider adopting a code of conduct to foster a greater sense of community.
  • Check out First Timers Bot to help create simple contributor-friendly issues to help onboard people to your project.

A first time contribution is often more about learning the process than the code itself. Remember we were all new once!

If you receive “spammy” pull requests, please let us know by applying the “invalid” label.

Learn more about how you can attract more contributors by building a welcoming community →


How can I get started?

Find an issue labeled Hacktoberfest, but remember you aren’t limited to those. Often the best project to contribute to is something you use or depend on every day.

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.

Still looking for an issue to work on? Find more that are up for grabs.

Find out more about how you can contribute to open source →

Have questions? Get in touch with our team by sending an email to

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