diff --git a/README.md b/README.md
index deff336..eed4790 100644
--- a/README.md
+++ b/README.md
@@ -12,9 +12,10 @@
 Two different methods are supported to store the secrets in Vault:
 
 - Vault 0.7.x included [TOTP backend](https://www.vaultproject.io/docs/secrets/totp/index.html)
-- Custom (generic) secrets containing `secret`, `name`, and `icon` keys
+- Custom (generic) secrets containing `secret`, `name`, `digits`, and `icon` keys
     - Icons supported are to be chosen from [FontAwesome](http://fontawesome.io/) icon set
     - When no `name` is set the Vault key will be used as a name
+    - The `digits` field supports the values `6` (default) and `8` to generate longer 8-digit-codes
 
 (When using the Vault builtin TOTP backend switching the icons for the tokens is not supported.)