Mention the DCO
@@ -19,6 +19,8 @@ Prometheus uses GitHub to manage reviews of pull requests.
Practices for Production
Environments](http://peter.bourgon.org/go-in-production/#formatting-and-style).
+* Be sure to sign off on the [DCO](https://github.com/probot/dco#how-it-works)
+
## Steps to Contribute
