Join us this October by participating in the fifth annual Hacktoberfest, a month-long celebration of open source software. Along with welcoming back our friends at Digital Ocean, Twilio has joined our partnership for its first year in celebrating Hacktoberfest.

It’s easy to join in on the fun (and get a limited-edition shirt!), all you have to do is check the

Hacktoberfest website for details on how to enter. Then, submit 5 pull requests to open source projects between October 1st and 31st. That’s it! The first 50,000 people to complete the challenge will earn a limited edition Hacktoberfest shirt. Terms and conditions will be posted on the website prior to the start of the contest.

If you’ve never contributed to an open source project before, you don’t have to miss out on all the fun—check out our contributing to open source guide.

Want to share your love for Hacktoberfest? Tell the world with the #hacktoberfest hashtag on Twitter, Facebook, or Instagram.

Last year, 30,000+ people from over 100 countries (119 to be exact!) submitted almost 240,000 pull requests to all kinds of projects—everything from documentation tweaks and bug fixes, to new features and performance improvements. See their stories and (and selfies!) on Twitter with

#hacktoberfest.