diff --git a/include/boost/serialization/vector.hpp b/include/boost/serialization/vector.hpp
index beca8f8c..b232c14e 100644
--- a/include/boost/serialization/vector.hpp
+++ b/include/boost/serialization/vector.hpp
@@ -29,6 +29,12 @@
 #include <boost/serialization/detail/get_data.hpp>
 #include <boost/mpl/bool.hpp>
 
+// default is being compatible with version 1.35 files, not 1.34.1 files
+#ifndef BOOST_SERIALIZATION_VECTOR_VERSION
+#define BOOST_SERIALIZATION_VECTOR_VERSION 4
+#endif
+
+
 namespace boost { 
 namespace serialization {
 
@@ -77,7 +83,7 @@ inline void save(
 ){
     const collection_size_type count(t.size());
     ar << BOOST_SERIALIZATION_NVP(count);
-    if(3 < ar.get_library_version()) {
+    if(BOOST_SERIALIZATION_VECTOR_VERSION < ar.get_library_version()) {
       const unsigned int item_version = version<U>::value;
       ar << BOOST_SERIALIZATION_NVP(item_version);
     }
@@ -96,7 +102,7 @@ inline void load(
     ar >> BOOST_SERIALIZATION_NVP(count);
     t.resize(count);
     unsigned int item_version=0;
-    if(3 < ar.get_library_version())
+    if(BOOST_SERIALIZATION_VECTOR_VERSION < ar.get_library_version())
         ar >> BOOST_SERIALIZATION_NVP(item_version);
     if (!t.empty())
       ar >> make_array(detail::get_data(t),t.size());
diff --git a/include/boost/serialization/vector_134.hpp b/include/boost/serialization/vector_134.hpp
new file mode 100644
index 00000000..bbb709c7
--- /dev/null
+++ b/include/boost/serialization/vector_134.hpp
@@ -0,0 +1,20 @@
+#ifndef  BOOST_SERIALIZATION_VECTOR_134_HPP
+#define BOOST_SERIALIZATION_VECTOR_134_HPP
+
+/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
+// vector_134.hpp: backwards compatibility with 1.34.1 files
+
+// (C) Copyright 2008 Matthias Troyer 
+
+
+#ifdef BOOST_SERIALIZATION_VECTOR_VERSION
+#if BOOST_SERIALIZATION_VECTOR_VERSION != 3
+#error Boost.Serialization cannot be compatible with both 1.34.1. and 1.35 files. Please include boost/serialization/vector_134.hpp before vector.hpp to be compatible with 1.34.1 files
+#endif
+#else
+#define BOOST_SERIALIZATION_VECTOR_VERSION 3
+#endif
+
+#include <boost/serialization/vector.hpp>
+
+#endif // BOOST_SERIALIZATION_VECTOR_134_HPP
diff --git a/src/basic_archive.cpp b/src/basic_archive.cpp
index ca197b6e..0bcffaca 100644
--- a/src/basic_archive.cpp
+++ b/src/basic_archive.cpp
@@ -54,9 +54,13 @@ ARCHIVE_SIGNATURE(){
 // 3 - numerous changes - can't guarentee compatibility with previous versions
 // 4 - Boost 1.34
 //     added register_version to properly support versioning for collections 
+// 5 - Boost 1.36
+//     changed serialization of collections: adding version even for primitive
+//     types caused backwards compatibility breaking change in 1.35
+
 BOOST_ARCHIVE_DECL(unsigned char)
 ARCHIVE_VERSION(){
-    return 4;
+    return 5;
 }
 
 } // namespace archive