diff --git a/include/boost/serialization/version.hpp b/include/boost/serialization/version.hpp
new file mode 100644
index 0000000..21a74d7
--- /dev/null
+++ b/include/boost/serialization/version.hpp
@@ -0,0 +1,107 @@
+#ifndef BOOST_SERIALIZATION_VERSION_HPP
+#define BOOST_SERIALIZATION_VERSION_HPP
+
+// MS compatible compilers support #pragma once
+#if defined(_MSC_VER)
+# pragma once
+#endif
+
+/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
+// version.hpp:
+
+// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 
+// Use, modification and distribution is subject to 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 for updates, documentation, and revision history.
+
+#include <boost/config.hpp>
+#include <boost/mpl/assert.hpp>
+#include <boost/mpl/int.hpp>
+#include <boost/mpl/eval_if.hpp>
+#include <boost/mpl/identity.hpp>
+#include <boost/mpl/integral_c_tag.hpp>
+
+#include <boost/type_traits/is_base_and_derived.hpp>
+
+namespace boost { 
+namespace serialization {
+
+struct basic_traits;
+
+// default version number is 0. Override with higher version
+// when class definition changes.
+template<class T>
+struct version
+{
+    template<class U>
+    struct traits_class_version {
+        typedef typename U::version type;
+    };
+
+    typedef mpl::integral_c_tag tag;
+    // note: at least one compiler complained w/o the full qualification
+    // on basic traits below
+    typedef
+        typename mpl::eval_if<
+            is_base_and_derived<boost::serialization::basic_traits,T>,
+            traits_class_version< T >,
+            mpl::int_<0>
+        >::type type;
+    BOOST_STATIC_CONSTANT(int, value = version::type::value);
+};
+
+#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
+template<class T>
+const int version<T>::value;
+#endif
+
+} // namespace serialization
+} // namespace boost
+
+/* note: at first it seemed that this would be a good place to trap
+ * as an error an attempt to set a version # for a class which doesn't
+ * save its class information (including version #) in the archive.
+ * However, this imposes a requirement that the version be set after
+ * the implemention level which would be pretty confusing.  If this
+ * is to be done, do this check in the input or output operators when
+ * ALL the serialization traits are available.  Included the implementation
+ * here with this comment as a reminder not to do this!
+ */
+//#include <boost/serialization/level.hpp>
+//#include <boost/mpl/equal_to.hpp>
+
+#include <boost/mpl/less.hpp>
+#include <boost/mpl/comparison.hpp>
+
+// specify the current version number for the class
+// version numbers limited to 8 bits !!!
+#define BOOST_CLASS_VERSION(T, N)                                      \
+namespace boost {                                                      \
+namespace serialization {                                              \
+template<>                                                             \
+struct version<T >                                                     \
+{                                                                      \
+    typedef mpl::int_<N> type;                                         \
+    typedef mpl::integral_c_tag tag;                                   \
+    BOOST_STATIC_CONSTANT(int, value = version::type::value);          \
+    BOOST_MPL_ASSERT((                                                 \
+        boost::mpl::less<                                              \
+            boost::mpl::int_<N>,                                       \
+            boost::mpl::int_<256>                                      \
+        >                                                              \
+    ));                                                                \
+    /*                                                                 \
+    BOOST_MPL_ASSERT((                                                 \
+        mpl::equal_to<                                                 \
+            :implementation_level<T >,                                 \
+            mpl::int_<object_class_info>                               \
+        >::value                                                       \
+    ));                                                                \
+    */                                                                 \
+};                                                                     \
+}                                                                      \
+}
+
+#endif // BOOST_SERIALIZATION_VERSION_HPP