--- Chart/StackedBars.pm.orig	2015-03-01 20:01:36 UTC
+++ Chart/StackedBars.pm
@@ -17,7 +17,7 @@ package Chart::StackedBars;
 # stacked bars
 package Chart::StackedBars;
 
-use Chart::Base '2.4.10';
+use Chart::Base;
 use GD;
 use Carp;
 use strict;