diff --git a/INSTALL b/INSTALL
index 582eef8ef..d3db6206c 100644
--- a/INSTALL
+++ b/INSTALL
@@ -85,7 +85,7 @@ http://nlnetlabs.nl/projects/ldns/
 Autoconf:
 
 If you modify configure.ac or configure doesn't exist (eg if you checked
-the code out of CVS yourself) then you will need autoconf-2.68 to rebuild
+the code out of CVS yourself) then you will need autoconf-2.69 to rebuild
 the automatically generated files by running "autoreconf".  Earlier
 versions may also work but this is not guaranteed.