diff --git a/README.md b/README.md
index ca4971e9..af0e1bd0 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,12 @@
 
 Module for provisioning DNS (bind9)
 
-Tested on Ubuntu 12.04 and CentOS 6.5, patches to support other operating systems are welcome.
+Supports:
+
+* Ubuntu: 14.04, 12.04
+* CentOS: 7.x, 6.x
+
+Patches to support other operating systems are welcome.
 
 This module depends on concat (https://github.com/puppetlabs/puppet-concat).