diff --git a/Gemfile.lock b/Gemfile.lock
index 2ed4687..993f09c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -43,7 +43,6 @@ GEM
       git (>= 1.2.5)
       rake
       rdoc
-    json (1.7.3)
     linecache (0.46)
       rbx-require-relative (> 0.0.4)
     mime-types (1.19)
@@ -54,8 +53,7 @@ GEM
     rake (0.9.2.2)
     rbx-require-relative (0.0.9)
     rcov (1.0.0)
-    rdoc (3.12)
-      json (~> 1.4)
+    rdoc (6.3.2)
     ruby-debug (0.10.4)
       columnize (>= 0.1)
       ruby-debug-base (~> 0.10.4.0)