diff --git a/Gemfile.lock b/Gemfile.lock
index 9a8c4e2..af4cb47 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -8,11 +8,9 @@ GEM
       git (>= 1.2.5)
       rake
       rdoc
-    json (1.7.6)
     psych (1.3.4)
     rake (10.0.3)
-    rdoc (3.12)
-      json (~> 1.4)
+    rdoc (6.3.2)
     rspec (2.12.0)
       rspec-core (~> 2.12.0)
       rspec-expectations (~> 2.12.0)