diff --git a/README b/README
index 39a5e04eee3..e32e3673852 100644
--- a/README
+++ b/README
@@ -70,7 +70,7 @@ There are several subdirectories:
 `man'       holds the source code for the Emacs Manual.  If you modify the
             manual sources, you will need the `makeinfo' program to produce
             an updated manual.  `makeinfo' is part of the GNU Texinfo
-            package; you need version 4.0 or later of Texinfo.
+            package; you need version 4.2 or later of Texinfo.
 `lispref'   holds the source code for the Emacs Lisp reference manual.
 `lispintro' holds the source code for the Introduction to Programming
             in Emacs Lisp manual.