diff --git a/include/ZeroTierSDK.h b/include/ZeroTierSDK.h
index 80aa0a8..68626c4 100644
--- a/include/ZeroTierSDK.h
+++ b/include/ZeroTierSDK.h
@@ -1,6 +1,6 @@
 /*
- * ZeroTier SDK - Network Virtualization Everywhere
- * Copyright (C) 2011-2016  ZeroTier, Inc.  https://www.zerotier.com/
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2017  ZeroTier, Inc.  https://www.zerotier.com/
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -14,6 +14,14 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * You can be released from the requirements of the license by purchasing
+ * a commercial license. Buying such a license is mandatory as soon as you
+ * develop commercial closed-source software that incorporates or links
+ * directly against ZeroTier software without disclosing the source code
+ * of your own application.
  */
 
 #ifndef ZT_ZEROTIERSDK_H
diff --git a/src/Connection.hpp b/src/Connection.hpp
index 681d919..e4b44b7 100644
--- a/src/Connection.hpp
+++ b/src/Connection.hpp
@@ -1,6 +1,6 @@
 /*
- * ZeroTier SDK - Network Virtualization Everywhere
- * Copyright (C) 2011-2016  ZeroTier, Inc.  https://www.zerotier.com/
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2017  ZeroTier, Inc.  https://www.zerotier.com/
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -14,6 +14,14 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * You can be released from the requirements of the license by purchasing
+ * a commercial license. Buying such a license is mandatory as soon as you
+ * develop commercial closed-source software that incorporates or links
+ * directly against ZeroTier software without disclosing the source code
+ * of your own application.
  */
 
 #ifndef ZT_CONNECTION_HPP
diff --git a/src/SocketTap.cpp b/src/SocketTap.cpp
index 39351b0..e6bc326 100644
--- a/src/SocketTap.cpp
+++ b/src/SocketTap.cpp
@@ -1,6 +1,6 @@
 /*
- * ZeroTier SDK - Network Virtualization Everywhere
- * Copyright (C) 2011-2016  ZeroTier, Inc.  https://www.zerotier.com/
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2017  ZeroTier, Inc.  https://www.zerotier.com/
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -14,6 +14,14 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * You can be released from the requirements of the license by purchasing
+ * a commercial license. Buying such a license is mandatory as soon as you
+ * develop commercial closed-source software that incorporates or links
+ * directly against ZeroTier software without disclosing the source code
+ * of your own application.
  */
 
 // picoTCP
diff --git a/src/SocketTap.hpp b/src/SocketTap.hpp
index 3e40dde..0de07f4 100644
--- a/src/SocketTap.hpp
+++ b/src/SocketTap.hpp
@@ -1,6 +1,6 @@
 /*
- * ZeroTier SDK - Network Virtualization Everywhere
- * Copyright (C) 2011-2016  ZeroTier, Inc.  https://www.zerotier.com/
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2017  ZeroTier, Inc.  https://www.zerotier.com/
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -14,6 +14,14 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * You can be released from the requirements of the license by purchasing
+ * a commercial license. Buying such a license is mandatory as soon as you
+ * develop commercial closed-source software that incorporates or links
+ * directly against ZeroTier software without disclosing the source code
+ * of your own application.
  */
 
 #ifndef ZT_SOCKETTAP_HPP
diff --git a/src/Utilities.cpp b/src/Utilities.cpp
index 5f0168f..bf2e745 100644
--- a/src/Utilities.cpp
+++ b/src/Utilities.cpp
@@ -1,6 +1,6 @@
 /*
- * ZeroTier SDK - Network Virtualization Everywhere
- * Copyright (C) 2011-2016  ZeroTier, Inc.  https://www.zerotier.com/
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2017  ZeroTier, Inc.  https://www.zerotier.com/
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -14,6 +14,14 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * You can be released from the requirements of the license by purchasing
+ * a commercial license. Buying such a license is mandatory as soon as you
+ * develop commercial closed-source software that incorporates or links
+ * directly against ZeroTier software without disclosing the source code
+ * of your own application.
  */
 
 #include <stdio.h>
diff --git a/src/Utilities.hpp b/src/Utilities.hpp
index 3f3f6d3..81a51da 100644
--- a/src/Utilities.hpp
+++ b/src/Utilities.hpp
@@ -1,6 +1,6 @@
 /*
- * ZeroTier SDK - Network Virtualization Everywhere
- * Copyright (C) 2011-2016  ZeroTier, Inc.  https://www.zerotier.com/
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2017  ZeroTier, Inc.  https://www.zerotier.com/
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -14,6 +14,14 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * You can be released from the requirements of the license by purchasing
+ * a commercial license. Buying such a license is mandatory as soon as you
+ * develop commercial closed-source software that incorporates or links
+ * directly against ZeroTier software without disclosing the source code
+ * of your own application.
  */
 
 #ifndef SDK_UTILITIES_HPP
diff --git a/src/ZeroTierSDK.cpp b/src/ZeroTierSDK.cpp
index 18c341a..eec7bf7 100644
--- a/src/ZeroTierSDK.cpp
+++ b/src/ZeroTierSDK.cpp
@@ -1,6 +1,6 @@
 /*
- * ZeroTier SDK - Network Virtualization Everywhere
- * Copyright (C) 2011-2016  ZeroTier, Inc.  https://www.zerotier.com/
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2017  ZeroTier, Inc.  https://www.zerotier.com/
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -14,6 +14,14 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * You can be released from the requirements of the license by purchasing
+ * a commercial license. Buying such a license is mandatory as soon as you
+ * develop commercial closed-source software that incorporates or links
+ * directly against ZeroTier software without disclosing the source code
+ * of your own application.
  */
 
 #include <dlfcn.h>
diff --git a/src/picoTCP.cpp b/src/picoTCP.cpp
index 66d9a76..38296a7 100644
--- a/src/picoTCP.cpp
+++ b/src/picoTCP.cpp
@@ -1,6 +1,6 @@
 /*
- * ZeroTier SDK - Network Virtualization Everywhere
- * Copyright (C) 2011-2016  ZeroTier, Inc.  https://www.zerotier.com/
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2017  ZeroTier, Inc.  https://www.zerotier.com/
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -14,6 +14,14 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * You can be released from the requirements of the license by purchasing
+ * a commercial license. Buying such a license is mandatory as soon as you
+ * develop commercial closed-source software that incorporates or links
+ * directly against ZeroTier software without disclosing the source code
+ * of your own application.
  */
 
 // picoTCP
diff --git a/src/picoTCP.hpp b/src/picoTCP.hpp
index 25a82eb..53384ee 100644
--- a/src/picoTCP.hpp
+++ b/src/picoTCP.hpp
@@ -1,6 +1,6 @@
 /*
- * ZeroTier SDK - Network Virtualization Everywhere
- * Copyright (C) 2011-2016  ZeroTier, Inc.  https://www.zerotier.com/
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2017  ZeroTier, Inc.  https://www.zerotier.com/
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -14,6 +14,14 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * You can be released from the requirements of the license by purchasing
+ * a commercial license. Buying such a license is mandatory as soon as you
+ * develop commercial closed-source software that incorporates or links
+ * directly against ZeroTier software without disclosing the source code
+ * of your own application.
  */
 
 #ifndef ZT_PICOTCP_HPP