diff --git a/Gemfile.lock b/Gemfile.lock
index feb894f..0247e1f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,9 +6,11 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (3.0.7)
+    activesupport (3.1.12)
+      multi_json (~> 1.0)
     i18n (0.5.0)
     libv8 (3.16.14.3)
+    multi_json (1.15.0)
     ref (1.0.5)
     therubyracer (0.12.1)
       libv8 (~> 3.16.14.0)