Select a city

Setting up a free SSL certificate on Heroku

In this tutorial, we will change the URL of your website from http://www.yourdomain.tld to https://www.yourdomain.tld. That's a subtle difference, but it is very important. We assume you already have a domain and it correctly points to your Heroku application. If that's not the case, check out this tutorial first.

Share article

Upgrading Dynos


Heroku now supports Let's Encrypt, a free way of generating SSL certificates. They call it Automated Certificate Management (or ACM in short).

Although the certificate is free, you still need to upgrade your application to at leasta Hobby plan to use it. Go to your Heroku dashboard, select your application and click on the Resources tab. You should quickly find the button Upgrade to Hobby.... Select the Hobby plan (7$/dyno/month) and Save.

Configuring SSL


In Heroku, go back to the Settings tab of your application and scroll down to Domain and certificates. You should now see a white button Configure SSL. Click on it. Leave the Automatically option ticked and click on Continue.

You should then have instructions to set up your DNS. That is something which we already did in the previous tutorial, so click on I've done this and Continue.

That's it! Open your favorite browser and navigate to https://www.yourdomain.tld, you should see a green URL bar with the Securekeyword 🍾

Bonus - Forcing SSL in Rails


Right now, if you go to http://www.yourdomain.tld, your website is still served insecurly. You can't expect your visitors to manually add the missing s in the address bar. What you want to do is force a redirection from http:// to https:// URLs. In Rails, you can do that with a single line of code, using the force_ssl option.

To do so, go to your Rails project, open it in Sublime Text, and open the config/environments/production.rb file. Look for a commented line mentioning force_ssl. Update this line to have:

config.force_ssl = true

That's the exact same configuration we did on www.lewagon.com.

Commit & Push your changes to Heroku. You should now see an automatic redirection from http:// URLs to https:// (using a 301 and preserving the path).

Go ship something awesome! 🚀


Want to know more about Le Wagon's 9-week bootcamp?
Download Syllabus
Keep reading
Learn to code

How to find a job as a Ruby or React developer

I am a team leader of Explore Group, one of Le Wagon London's hiring partners! I oversee the day to day activities of a team of specialist Ruby and React consultants who focus on placing talented devs in a range of companies, big and small. I thought I'd share some insight into the job market and some advice with you.

Graduate stories

From Supervisor in Customer Service to Software Developer at Babbel.

Before Le Wagon, I was a Senior Supervisor in Customer Service at Booking.com. I decided that I wanted a change in my career. I have always been interested in coding and after attending one of Le Wagon’s free workshops, I knew that it was definitely the path I wanted to pursue. Now I work as a Junior Software Developer at Babbel. Take a look at my story.

Graduate stories

Taking the Leap Into a Developer Role After Years As A Corporate Lawyer

Tair was a corporate lawyer who ditched the legal world to pursue coding. After completing the Bootcamp, she is committed to continuous learning. She now works as a Technical Business Analyst at Deloitte Digital.

Want to go further and learn to code in 9 weeks?

We are in 35 cities worldwide.