Index: trunk/FACT++/configure.ac
===================================================================
--- trunk/FACT++/configure.ac	(revision 19188)
+++ trunk/FACT++/configure.ac	(revision 19189)
@@ -205,5 +205,5 @@
 
 # Needed to compile FACT++
-AX_BOOST_BASE([1.40], [],
+AX_BOOST_BASE([1.47], [],
    AC_MSG_ERROR([The boost C++ libraries (>=1.40) are not properly installed.])
 )