diff --git a/configure.in b/configure.in
index 97856f9..ddd11da 100644
--- a/configure.in
+++ b/configure.in
@@ -2,7 +2,7 @@ dnl
 dnl autoconf input file to generate MCONFIG
 dnl
 
-AC_PREREQ(2.59)
+AC_PREREQ(2.61)
 AC_INIT(MCONFIG.in)
 AC_PREFIX_DEFAULT(/usr)