diff --git a/wayback_machine_downloader.gemspec b/wayback_machine_downloader.gemspec
index 5da6e6d..770a6e3 100644
--- a/wayback_machine_downloader.gemspec
+++ b/wayback_machine_downloader.gemspec
@@ -1,6 +1,8 @@
+require './lib/wayback_machine_downloader'
+
 Gem::Specification.new do |s|
   s.name        = "wayback_machine_downloader"
-  s.version     = "0.1.3"
+  s.version     = WaybackMachineDownloader::VERSION
   s.executables << "wayback_machine_downloader"
   s.date        = "2015-07-25"
   s.summary     = "Download any website from the Wayback Machine."