diff --git a/LICENSE b/LICENSE
index e8367cf..025d512 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) Markus Hauschild, 2016.
+Copyright (c) 2016 Markus Hauschild & David Klaftenegger
 
 Permission to use, copy, modify, and/or distribute this software for any
 purpose with or without fee is hereby granted, provided that the above
diff --git a/acertmgr.py b/acertmgr.py
index 579b993..b42920b 100755
--- a/acertmgr.py
+++ b/acertmgr.py
@@ -2,7 +2,8 @@
 # -*- coding: utf-8 -*-
 
 # Automated Certificate Manager using ACME
-# Copyright (c) Markus Hauschild, 2016.
+# Copyright (c) Markus Hauschild & David Klaftenegger, 2016.
+# available under the ISC license, see LICENSE
 
 
 import acertmgr_ssl