diff --git a/ChangeLog b/ChangeLog
index 796cf588..5446e698 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,7 +1,8 @@
 2012-01-30  Rene Liebscher <R.Liebscher@gmx.de>
 
 	* configure.ac: fixed detection of yylex_destroy availability
-	by checking the version number of flex
+	by checking the version number of flex; bump required autoconf
+	version to 2.60 (for AC_PROG_SED)
 
 2012-01-30  Joerg Wunsch <j.gnu@uriah.heep.sax.de>
 
diff --git a/configure.ac b/configure.ac
index 5bb71d3e..fc36c85b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -23,7 +23,7 @@
 
 # Process this file with autoconf to produce a configure script.
 
-AC_PREREQ(2.57)
+AC_PREREQ(2.60)
 AC_INIT(avrdude, 5.11svn, avrdude-dev@nongnu.org)
 
 AC_CANONICAL_BUILD