diff --git a/install.xml b/install.xml
index cb1ed9aae7..7ea4efad8a 100644
--- a/install.xml
+++ b/install.xml
@@ -228,9 +228,9 @@
           <key>windows</key>
           <map>
             <key>md5sum</key>
-            <string>c3ce8993eac0ca9546564d04131dc4f4</string>
+            <string>23a639706b58bf31de4898cfc265bedc</string>
             <key>url</key>
-            <uri>http://s3.amazonaws.com/viewer-source-downloads/install_pkgs/boost-1.34.1-windows-20090430.tar.bz2</uri>
+            <uri>http://s3.amazonaws.com/viewer-source-downloads/install_pkgs/boost-1.34.1-windows-20090603.tar.bz2</uri>
           </map>
         </map>
       </map>