diff --git a/README.rst b/README.md
similarity index 96%
rename from README.rst
rename to README.md
index f13bb3a..5292651 100644
--- a/README.rst
+++ b/README.md
@@ -48,8 +48,8 @@ An example ``credentials.ini`` file:
 
 .. code-block:: ini
 
-   certbot_dns_transip:dns_transip_username = myremoteuser
-   certbot_dns_transip:dns_transip_api_key= transip_api_key
+   dns_transip_username = myremoteuser
+   :dns_transip_api_key_file = path/to/transip_api_key
 
 The path to this file can be provided interactively or using the
 ``--dns-transip-credentials`` command-line argument. Certbot