diff --git a/include/boost/implicit_cast.hpp b/include/boost/implicit_cast.hpp
index 865815c..2593cb4 100755
--- a/include/boost/implicit_cast.hpp
+++ b/include/boost/implicit_cast.hpp
@@ -1,8 +1,7 @@
-// Copyright David Abrahams 2003. Permission to copy, use,
-// modify, sell and distribute this software is granted provided this
-// copyright notice appears in all copies. This software is provided
-// "as is" without express or implied warranty, and with no claim as
-// to its suitability for any purpose.
+// Copyright David Abrahams 2003.
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
 #ifndef IMPLICIT_CAST_DWA200356_HPP
 # define IMPLICIT_CAST_DWA200356_HPP
 
diff --git a/test/implicit_cast.cpp b/test/implicit_cast.cpp
index 39aee56..564c9eb 100644
--- a/test/implicit_cast.cpp
+++ b/test/implicit_cast.cpp
@@ -1,8 +1,7 @@
-// Copyright David Abrahams 2003. Permission to copy, use,
-// modify, sell and distribute this software is granted provided this
-// copyright notice appears in all copies. This software is provided
-// "as is" without express or implied warranty, and with no claim as
-// to its suitability for any purpose.
+// Copyright David Abrahams 2003.
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
 
 #include <boost/implicit_cast.hpp>
 #include <cassert>
diff --git a/test/implicit_cast_fail.cpp b/test/implicit_cast_fail.cpp
index 9805256..80143da 100644
--- a/test/implicit_cast_fail.cpp
+++ b/test/implicit_cast_fail.cpp
@@ -1,8 +1,7 @@
-// Copyright David Abrahams 2003. Permission to copy, use,
-// modify, sell and distribute this software is granted provided this
-// copyright notice appears in all copies. This software is provided
-// "as is" without express or implied warranty, and with no claim as
-// to its suitability for any purpose.
+// Copyright David Abrahams 2003.
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
 
 #include <boost/implicit_cast.hpp>
 #include <boost/type.hpp>