diff --git a/README.md b/README.md
index 069009c..54fb58d 100644
--- a/README.md
+++ b/README.md
@@ -4,5 +4,5 @@
 
 This role will deploy the metallb load-balancer.
 
-This role requires that the 'devpath' variable be set.
+This role requires that the 'devpath' and 'metallb_ver' variables be set.