diff --git a/Gemfile.lock b/Gemfile.lock
index f81ee45..1940ba5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -18,7 +18,6 @@ GEM
       git (>= 1.2.5)
       rake
       rdoc
-    json (1.7.5)
     mongo (1.3.1)
       bson (>= 1.3.1)
     mongoid (3.0.5)
@@ -30,8 +29,7 @@ GEM
     multi_json (1.3.6)
     origin (1.0.8)
     rake (0.9.2.2)
-    rdoc (3.12)
-      json (~> 1.4)
+    rdoc (6.3.2)
     shoulda (3.1.1)
       shoulda-context (~> 1.0)
       shoulda-matchers (~> 1.2)