diff --git a/docopt.cpp b/docopt.cpp
index 937845d..3c43434 100644
--- a/docopt.cpp
+++ b/docopt.cpp
@@ -2,6 +2,10 @@
 //  docopt.cpp
 //  docopt
 //
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the MIT and/or Boost licenses at your convenience.
+//  See the LICENSE-MIT and LICENSE-Boost-1.0 files for details.
+//
 //  Created by Jared Grubb on 2013-11-03.
 //  Copyright (c) 2013 Jared Grubb. All rights reserved.
 //
diff --git a/docopt.h b/docopt.h
index 4c40741..932fc6c 100644
--- a/docopt.h
+++ b/docopt.h
@@ -2,6 +2,10 @@
 //  docopt.h
 //  docopt
 //
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the MIT and/or Boost licenses at your convenience.
+//  See the LICENSE-MIT and LICENSE-Boost-1.0 files for details.
+//
 //  Created by Jared Grubb on 2013-11-03.
 //  Copyright (c) 2013 Jared Grubb. All rights reserved.
 //
diff --git a/docopt_private.h b/docopt_private.h
index 931986b..d04379f 100644
--- a/docopt_private.h
+++ b/docopt_private.h
@@ -2,6 +2,10 @@
 //  docopt_private.h
 //  docopt
 //
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the MIT and/or Boost licenses at your convenience.
+//  See the LICENSE-MIT and LICENSE-Boost-1.0 files for details.
+//
 //  Created by Jared Grubb on 2013-11-04.
 //  Copyright (c) 2013 Jared Grubb. All rights reserved.
 //
diff --git a/docopt_util.h b/docopt_util.h
index b504609..6ebae8f 100644
--- a/docopt_util.h
+++ b/docopt_util.h
@@ -2,6 +2,10 @@
 //  docopt_util.h
 //  docopt
 //
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the MIT and/or Boost licenses at your convenience.
+//  See the LICENSE-MIT and LICENSE-Boost-1.0 files for details.
+//
 //  Created by Jared Grubb on 2013-11-04.
 //  Copyright (c) 2013 Jared Grubb. All rights reserved.
 //
diff --git a/docopt_value.h b/docopt_value.h
index 829ee55..2d9ab86 100644
--- a/docopt_value.h
+++ b/docopt_value.h
@@ -2,6 +2,10 @@
 //  value.h
 //  docopt
 //
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the MIT and/or Boost licenses at your convenience.
+//  See the LICENSE-MIT and LICENSE-Boost-1.0 files for details.
+//
 //  Created by Jared Grubb on 2013-10-14.
 //  Copyright (c) 2013 Jared Grubb. All rights reserved.
 //