diff --git a/README.md b/README.md
index f1c7480..5f82eff 100644
--- a/README.md
+++ b/README.md
@@ -272,6 +272,7 @@ You don't have to do anything manually!
 1. Alwaysdata.com API
 1. Linode.com API
 1. FreeDNS (https://freedns.afraid.org/)
+1. cyon.ch
 
 **More APIs coming soon...**
 
diff --git a/dnsapi/README.md b/dnsapi/README.md
index 6a86bf4..70af17e 100644
--- a/dnsapi/README.md
+++ b/dnsapi/README.md
@@ -305,6 +305,24 @@ Note that you cannot use acme.sh automatic DNS validation for FreeDNS public dom
 you create under a FreeDNS public domain.  You must own the top level domain in order to automaitcally
 validate with acme.sh at FreeDNS.
 
+## 16. Use cyon.ch
+
+You only need to set your cyon.ch login credentials.
+If you also have 2 Factor Authentication (OTP) enabled, you need to set your secret token too and have `oathtool` installed.
+
+```
+export cyon_username="your_cyon_username"
+export cyon_password="your_cyon_password"
+export cyon_otp_secret="your_otp_secret" # Only required if using 2FA
+```
+
+To issue a cert:
+```
+acme.sh --issue --dns dns_cyon -d example.com -d www.example.com
+```
+
+The `cyon_username`, `cyon_password` and `cyon_otp_secret` will be saved in `~/.acme.sh/account.conf` and will be reused when needed.
+
 # Use custom API
 
 If your API is not supported yet, you can write your own DNS API.
diff --git a/dnsapi/dns_cyon.sh b/dnsapi/dns_cyon.sh
index 3a441aa..6c9c5c5 100644
--- a/dnsapi/dns_cyon.sh
+++ b/dnsapi/dns_cyon.sh
@@ -9,27 +9,12 @@
 # -------------
 # - oathtool (When using 2 Factor Authentication)
 #
-# Author: Armando Lüscher <armando@noplanman.ch>
-########
-
-########
-# Define cyon.ch login credentials:
-#
-# Either set them here: (uncomment these lines)
+# Issues:
+# -------
+# Any issues / questions / suggestions can be posted here:
+# https://github.com/noplanman/cyon-api/issues
 #
-# cyon_username='your_cyon_username'
-# cyon_password='your_cyon_password'
-# cyon_otp_secret='your_otp_secret' # Only required if using 2FA
-#
-# ...or export them as environment variables in your shell:
-#
-# $ export cyon_username='your_cyon_username'
-# $ export cyon_password='your_cyon_password'
-# $ export cyon_otp_secret='your_otp_secret' # Only required if using 2FA
-#
-# *Note:*
-# After the first run, the credentials are saved in the "account.conf"
-# file, so any hard-coded or environment variables can then be removed.
+# Author: Armando Lüscher <armando@noplanman.ch>
 ########
 
 dns_cyon_add() {