diff --git a/README.md b/README.md
index d2db29b..5770419 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ Or with a volume, for example if you created a volume named `bibliomane_data`:
 
 `--add-user` or `-a` can be used to create an account on startup. It requires a string following htpasswd format `[username]:[bcrypt hashed password]`.
 
-The password can be generated using `htpasswd -nB [username]`.
+The password can be generated using `htpasswd -nBC10 [username]`.
 
 For example, to create an user account `demo`: