diff --git a/README.md b/README.md
index 83872a3..3215911 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,9 @@ It can then be invoked as:
 BEAKER_SETFILE=centos7-64 bundle exec rake beaker
 ```
 
+To list all known setfiles, you can run `bundle exec setfiles`.
+That command is provided by puppet_metadata, it will parse the local metadata.json and generate a list of supported setfiles based on the supported operating systems in the module.
+
 Other common environment variables:
 
 * `BEAKER_HYPERVISOR` defaults to `docker`, can be set to `vagrant_libvirt` or `vagrant` (using [VirtualBox](https://www.virtualbox.org/))