diff --git a/Gemfile.lock b/Gemfile.lock
index b93a9ff..059827b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -16,11 +16,9 @@ GEM
       rdoc (>= 3.6.1)
       rubyforge (>= 2.0.4)
     gemcutter (0.7.1)
-    json (1.8.0)
     json_pure (1.8.0)
     rake (10.0.4)
-    rdoc (4.0.1)
-      json (~> 1.4)
+    rdoc (6.3.2)
     rubyforge (2.0.4)
       json_pure (>= 1.1.7)
     uuidtools (2.1.4)