diff --git a/README.md b/README.md
index 3f62d92..575d6a4 100644
--- a/README.md
+++ b/README.md
@@ -2,4 +2,6 @@
 
 A simple tool to automate openstack snapshots
 
-https://phabricator.wikimedia.org/T294429
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+https://phabricator.wikimedia.org/T294429
+
+https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/16.1/html/block_storage_backup_guide/using-cinder-backup
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