diff -up gnuplot-4.4.4/term/lua/gnuplot-tikz.lua.tikz gnuplot-4.4.4/term/lua/gnuplot-tikz.lua
--- gnuplot-4.4.4/term/lua/gnuplot-tikz.lua.tikz	2011-11-13 00:57:15.000000000 +0100
+++ gnuplot-4.4.4/term/lua/gnuplot-tikz.lua	2012-01-06 10:55:45.157816216 +0100
@@ -251,6 +251,7 @@ pgf.write_graph_begin = function (font, 
   gp.write(string.format("\\begin{tikzpicture}[gnuplot%s]\n",global_opt))
   gp.write(string.format("%%%% generated with GNUPLOT %sp%s (%s; terminal rev. %s, script rev. %s)\n%%%% %s\n",
       term.gp_version, term.gp_patchlevel,
+      _VERSION,
       string.sub(term.lua_term_revision,7,-3),
       pgf.REVISION,os.date()))
   if font ~= "" then