diff --git a/metadata.json b/metadata.json
index ba24175..ae7c70d 100644
--- a/metadata.json
+++ b/metadata.json
@@ -16,6 +16,14 @@
     {
       "operatingsystem": "Ubuntu",
       "operatingsystemrelease": [ "12.04", "14.04" ]
+    },
+    {
+      "operatingsystem": "CentOS",
+      "operatingsystemrelease": [ "6" ]
+    },
+    {
+      "operatingsystem": "RedHat",
+      "operatingsystemrelease": [ "6" ]
     }
   ],
   "dependencies": [