Gemfile.lock in clockwork-0.3.4 vs Gemfile.lock in clockwork-0.4.0

@@ -9,13 +9,15 @@
       rake
     metaclass (0.0.1)
     mocha (0.10.0)
       metaclass (~> 0.0.1)
     rake (0.9.2)
+    tzinfo (0.3.32)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   contest
   jeweler
   mocha
+  tzinfo