diff --git a/README.md b/README.md
index e7180b5..2d67797 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # PowerDNS
 
-All configuration is to be placed inside the `powerdns` dict.
+All configuration is to be placed inside the `powerdns` dict. To only update zonefiles in an existing setup (and skip the setup procedure and everything else) use the "updatedns" tag.
 
 ```
 # key:value of config values