Index: shared/date_time.cpp
===================================================================
--- shared/date_time.cpp	(revision 2)
+++ shared/date_time.cpp	(working copy)
@@ -9,6 +9,7 @@
 #include <boost/locale/date_time.hpp>
 #include <boost/locale/formatting.hpp>
 #include <boost/thread/mutex.hpp>
+#include <boost/thread/lock_types.hpp>
 #include <math.h>
 
 namespace boost {
Index: shared/generator.cpp
===================================================================
--- shared/generator.cpp	(revision 2)
+++ shared/generator.cpp	(working copy)
@@ -14,6 +14,7 @@
 #include <algorithm>
 #include <boost/shared_ptr.hpp>
 #include <boost/thread/mutex.hpp>
+#include <boost/thread/lock_types.hpp>
 
 namespace boost {
     namespace locale {
Index: shared/localization_backend.cpp
===================================================================
--- shared/localization_backend.cpp	(revision 2)
+++ shared/localization_backend.cpp	(working copy)
@@ -9,6 +9,7 @@
 #include <boost/locale/localization_backend.hpp>
 #include <boost/shared_ptr.hpp>
 #include <boost/thread/mutex.hpp>
+#include <boost/thread/lock_types.hpp>
 #include <vector>
 
 #ifdef BOOST_LOCALE_WITH_ICU
Index: win32/lcid.cpp
===================================================================
--- win32/lcid.cpp	(revision 2)
+++ win32/lcid.cpp	(working copy)
@@ -20,6 +20,7 @@
 #include <windows.h>
 
 #include <boost/thread/mutex.hpp>
+#include <boost/thread/lock_types.hpp>
 
 namespace boost {
 namespace locale {