diff --git a/README.md b/README.md
index c71d4dc..ad0a9a5 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,8 @@ services:
       - ./data:/data
       - ./ssh:/ssh # add authorized_keys file here
     environment:
+      USERNAME: myuser # default: borgstore
+      GROUPNAME: mygroup # default: borgstore
       SSH_PUBKEY: ssh-rsa AAAAB3NzaC....  # optional
       PUID: 1000 # default: 1000
       PGID: 1000 # default: 1000