diff --git a/configure.ac b/configure.ac
index 9785389d6..b1c434117 100644
--- a/configure.ac
+++ b/configure.ac
@@ -19,7 +19,7 @@ AM_INIT_AUTOMAKE([-Wall -Werror -Wno-portability foreign tar-ustar subdir-object
 AC_CANONICAL_HOST
 AC_CANONICAL_BUILD
 
-AC_PREREQ([2.61])
+AC_PREREQ([2.69])
 
 
 AC_CONFIG_HEADERS([config.h:config.in])dnl Keep filename to 8.3 for MS-DOS.