Change autoconf version in README to be in line with configure.ac

diff --git a/README.md b/README.md
index 761bc82d572ee7c53fa1dac53c960ce28f2efb4e..05e3484118d249c617d05fb96b05f554644ed845 100644 (file)
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ If you build from git, first build configure:
     $ ./bootstrap
 
 (You may need to do that twice. You also need libtool-1.4, 1.3 won't work.
-Autoconf 2.69 or newer and Automake 1.11 or newer are required, too.)
+Autoconf 2.61 or newer and Automake 1.11 or newer are required, too.)
 
 To compile a very clean version, use: