diff --git a/Gemfile.lock b/Gemfile.lock
index 13b8516..325c0be 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,12 +1,18 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    activesupport (3.2.3)
-      i18n (~> 0.6)
-      multi_json (~> 1.0)
+    activesupport (4.1.11)
+      i18n (~> 0.6, >= 0.6.9)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.1)
+      tzinfo (~> 1.1)
+    concurrent-ruby (1.1.5)
     diff-lcs (1.1.3)
-    i18n (0.6.0)
-    multi_json (1.3.4)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    json (1.8.6)
+    minitest (5.12.2)
     rake (0.9.2.2)
     rspec (2.9.0)
       rspec-core (~> 2.9.0)
@@ -16,6 +22,9 @@ GEM
     rspec-expectations (2.9.1)
       diff-lcs (~> 1.1.3)
     rspec-mocks (2.9.0)
+    thread_safe (0.3.6)
+    tzinfo (1.2.5)
+      thread_safe (~> 0.1)
 
 PLATFORMS
   ruby