commit 4091a5dfb41072b0a8b95500582febe15e0cdae9
Author: Phil Holmes <mail@philholmes.net>
Date:   Sat Jul 15 11:41:46 2017 +0100

    Release: bump Welcome versions.

diff --git a/ly/Welcome-to-LilyPond-MacOS.ly b/ly/Welcome-to-LilyPond-MacOS.ly
index 4eba11a..d928d6d 100644
--- a/ly/Welcome-to-LilyPond-MacOS.ly
+++ b/ly/Welcome-to-LilyPond-MacOS.ly
@@ -23,7 +23,7 @@ That's it.  For more information, visit http://lilypond.org .
 
 %}
 
-\version "2.19.63"  % necessary for upgrading to future LilyPond versions.
+\version "2.19.64"  % necessary for upgrading to future LilyPond versions.
 
 \header{
   title = "A scale in LilyPond"
diff --git a/ly/Welcome_to_LilyPond.ly b/ly/Welcome_to_LilyPond.ly
index edeed95..77029e7 100644
--- a/ly/Welcome_to_LilyPond.ly
+++ b/ly/Welcome_to_LilyPond.ly
@@ -32,7 +32,7 @@ Good luck with LilyPond!  Happy engraving.
 
 %}
 
-\version "2.19.63"  % necessary for upgrading to future LilyPond versions.
+\version "2.19.64"  % necessary for upgrading to future LilyPond versions.
 
 \header{
   title = "A scale in LilyPond"
