diff --git a/asio/README b/asio/README
index da4b51d..3843fcc 100644
--- a/asio/README
+++ b/asio/README
@@ -1,4 +1,4 @@
-asio version 1.4.0
-Released Sunday, 01 February 2009.
+asio version 1.4.1
+Released Wednesday, 04 March 2009.
 
 See doc/index.html for API documentation and a tutorial.
diff --git a/asio/boost_asio.manifest b/asio/boost_asio.manifest
index c84dbf0..e3c6a75 100644
--- a/asio/boost_asio.manifest
+++ b/asio/boost_asio.manifest
@@ -3161,10 +3161,10 @@
 /libs/system/test/header_only_test.cpp
 /libs/system/test/initialization_test.cpp
 /libs/system/test/Jamfile.v2
+/libs/system/test/msvc_system/
+/libs/system/test/msvc_system/common.vsprops
+/libs/system/test/msvc_system/error_code_test/
+/libs/system/test/msvc_system/error_code_test/error_code_test.vcproj
+/libs/system/test/msvc_system/msvc_system.sln
 /libs/system/test/system_error_test.cpp
-/libs/system/test/system_msvc/
-/libs/system/test/system_msvc/common.vsprops
-/libs/system/test/system_msvc/error_code_test/
-/libs/system/test/system_msvc/error_code_test/error_code_test.vcproj
-/libs/system/test/system_msvc/system_msvc.sln
 /README.txt
diff --git a/asio/configure.ac b/asio/configure.ac
index 2b9db29..0f61f12 100644
--- a/asio/configure.ac
+++ b/asio/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT(asio, [1.4.0])
+AC_INIT(asio, [1.4.1])
 AC_CONFIG_SRCDIR(include/asio.hpp)
 AM_MAINTAINER_MODE
 AM_INIT_AUTOMAKE([tar-ustar])
@@ -17,29 +17,39 @@
   CPPFLAGS="$CPPFLAGS -I${withval}"
 ],
 [
-  BOOSTDIR="`pwd`/../boost_1_36_0"
+  BOOSTDIR="`pwd`/../boost_1_38_0"
   if test -d "${BOOSTDIR}"; then
     CPPFLAGS="$CPPFLAGS -I${BOOSTDIR}"
   else
-    BOOSTDIR="`pwd`/../boost_1_35_0"
+    BOOSTDIR="`pwd`/../boost_1_37_0"
     if test -d "${BOOSTDIR}"; then
       CPPFLAGS="$CPPFLAGS -I${BOOSTDIR}"
     else
-      BOOSTDIR="`pwd`/../boost_1_34_1"
+      BOOSTDIR="`pwd`/../boost_1_36_0"
       if test -d "${BOOSTDIR}"; then
         CPPFLAGS="$CPPFLAGS -I${BOOSTDIR}"
       else
-        BOOSTDIR="`pwd`/../boost_1_34_0"
+        BOOSTDIR="`pwd`/../boost_1_35_0"
         if test -d "${BOOSTDIR}"; then
           CPPFLAGS="$CPPFLAGS -I${BOOSTDIR}"
         else
-          BOOSTDIR="`pwd`/../boost_1_33_1"
+          BOOSTDIR="`pwd`/../boost_1_34_1"
           if test -d "${BOOSTDIR}"; then
             CPPFLAGS="$CPPFLAGS -I${BOOSTDIR}"
           else
-            BOOSTDIR="`pwd`/../boost_1_33_0"
+            BOOSTDIR="`pwd`/../boost_1_34_0"
             if test -d "${BOOSTDIR}"; then
               CPPFLAGS="$CPPFLAGS -I${BOOSTDIR}"
+            else
+              BOOSTDIR="`pwd`/../boost_1_33_1"
+              if test -d "${BOOSTDIR}"; then
+                CPPFLAGS="$CPPFLAGS -I${BOOSTDIR}"
+              else
+                BOOSTDIR="`pwd`/../boost_1_33_0"
+                if test -d "${BOOSTDIR}"; then
+                  CPPFLAGS="$CPPFLAGS -I${BOOSTDIR}"
+                fi
+              fi
             fi
           fi
         fi
diff --git a/asio/include/asio/version.hpp b/asio/include/asio/version.hpp
index 41e9694..6a107ba 100644
--- a/asio/include/asio/version.hpp
+++ b/asio/include/asio/version.hpp
@@ -18,6 +18,6 @@
 // ASIO_VERSION % 100 is the sub-minor version
 // ASIO_VERSION / 100 % 1000 is the minor version
 // ASIO_VERSION / 100000 is the major version
-#define ASIO_VERSION 100400 // 1.4.0
+#define ASIO_VERSION 100401 // 1.4.1
 
 #endif // ASIO_VERSION_HPP