diff --git a/include/boost/iterator.hpp b/include/boost/iterator.hpp
index 6adab0e..c9c6197 100644
--- a/include/boost/iterator.hpp
+++ b/include/boost/iterator.hpp
@@ -1,59 +1,20 @@
-//  iterator.hpp workarounds for non-conforming standard libraries  ---------//
-
 //  (C) Copyright Beman Dawes 2000. 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)
 
-//  See http://www.boost.org/libs/utility for documentation.
-
-//  Revision History
-//  12 Jan 01 added <cstddef> for std::ptrdiff_t (Jens Maurer)
-//  28 Jun 00 Workarounds to deal with known MSVC bugs (David Abrahams)
-//  26 Jun 00 Initial version (Jeremy Siek)
-
 #ifndef BOOST_ITERATOR_HPP
 #define BOOST_ITERATOR_HPP
 
+// This header is obsolete and will be deprecated.
+
 #include <iterator>
 #include <cstddef>           // std::ptrdiff_t
-#include <boost/config.hpp>
 
 namespace boost
 {
-# if defined(BOOST_NO_STD_ITERATOR) && !defined(BOOST_MSVC_STD_ITERATOR)
-  template <class Category, class T,
-    class Distance = std::ptrdiff_t,
-    class Pointer = T*, class Reference = T&>
-  struct iterator
-  {
-    typedef T         value_type;
-    typedef Distance  difference_type;
-    typedef Pointer   pointer;
-    typedef Reference reference;
-    typedef Category  iterator_category;
-  };
-# else
 
-  // declare iterator_base in namespace detail to work around MSVC bugs which
-  // prevent derivation from an identically-named class in a different namespace.
-  namespace detail {
-   template <class Category, class T, class Distance, class Pointer, class Reference>
-#  if !defined(BOOST_MSVC_STD_ITERATOR)
-   struct iterator_base : std::iterator<Category, T, Distance, Pointer, Reference> {};
-#  else
-   struct iterator_base : std::iterator<Category, T, Distance>
-   {
-     typedef Reference reference;
-     typedef Pointer pointer;
-     typedef Distance difference_type;
-   };
-#  endif
-  }
+using std::iterator;
 
-  template <class Category, class T, class Distance = std::ptrdiff_t,
-            class Pointer = T*, class Reference = T&>
-  struct iterator : boost::detail::iterator_base<Category, T, Distance, Pointer, Reference> {};
-# endif
 } // namespace boost
 
 #endif // BOOST_ITERATOR_HPP