Rakefile in xapian-ruby-1.4.18 vs Rakefile in xapian-ruby-1.4.22

@@ -7,10 +7,10 @@
 def system!(cmd)
 	puts cmd
 	system(cmd) or raise
 end
 
-ver = '1.4.18'
+ver = '1.4.22'
 source_dir = 'xapian_source'
 core = "xapian-core-#{ver}"
 bindings = "xapian-bindings-#{ver}"
 xapian_config = "#{Dir.pwd}/#{core}/xapian-config"