diff --git a/readme.md b/readme.md
index fa14123..4b4e926 100644
--- a/readme.md
+++ b/readme.md
@@ -63,6 +63,7 @@ docker run ldez/traefik-certs-dumper:<tag_name>
 - [traefik-certs-dumper kv](docs/traefik-certs-dumper_kv.md)
 
 ## Examples
+Note: If you are dumping an acme.json file from Traefik v2, you must add "--version v2" as a command line arg.
 
 ### Simple Dump