diff --git a/configure.in b/configure.in
index dac3f7068..4c3c0126f 100644
--- a/configure.in
+++ b/configure.in
@@ -20,7 +20,7 @@ dnl  along with GUILE; see the file COPYING.  If not, write to the
 dnl  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 dnl  Boston, MA 02111-1307, USA.
 
-AC_PREREQ(2.50)
+AC_PREREQ(2.53)
 
 AC_INIT
 AC_CONFIG_SRCDIR([Makefile.in])