diff --git a/README.md b/README.md
index 924fea7..0273ea3 100644
--- a/README.md
+++ b/README.md
@@ -55,3 +55,7 @@
 ```
 certbot certonly -c wildcard-ini
 ```
+
+## Licences
+
+Get some code snippets from the [inwx documentation](https://www.inwx.de/de/help/apidoc/f/ch01s05.html#idm144) and form the [pyhton 2.7 inwx repository](https://github.com/inwx/python2.7-client).