diff --git a/README b/README
index dffa48862..065994a3f 100644
--- a/README
+++ b/README
@@ -215,7 +215,7 @@ You'll also need:
 
 Additionally, for building from git:
 
-- autoconf >= 2.59
+- autoconf >= 2.64
 - automake >= 1.9
 - texinfo
 
diff --git a/configure.ac b/configure.ac
index 038212cdb..7e475e731 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_PREREQ(2.60)
+AC_PREREQ(2.64)
 AC_INIT([openocd], [0.8.0-dev],
   [OpenOCD Mailing List <openocd-devel@lists.sourceforge.net>])
 AC_CONFIG_SRCDIR([src/openocd.c])