diff --git a/docs/reference/client-config.md b/docs/reference/client-config.md
index 7f03a8be6..bcc6f1ee6 100644
--- a/docs/reference/client-config.md
+++ b/docs/reference/client-config.md
@@ -185,6 +185,7 @@ passphrase.
 |`NOTARY_TARGETS_PASSPHRASE`    | The targets (an online) key passphrase    |
 |`NOTARY_SNAPSHOT_PASSPHRASE`   | The snapshot (an online) key passphrase   |
 |`NOTARY_DELEGATION_PASSPHRASE` | The delegation (an online) key passphrase |
+|`NOTARY_AUTH`                  | The notary server creds ("username:password"), base64-ed |
 
 
 Please note that if provided, the passphrase in `NOTARY_DELEGATION_PASSPHRASE`