diff --git a/Gemfile.lock b/Gemfile.lock
index 48fd854..b2fec99 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,14 +2,12 @@ GEM
   remote: https://rubygems.org/
   specs:
     erubis (2.7.0)
-    json (1.8.2)
     mini_portile (0.6.2)
     nokogiri (1.6.6.2)
       mini_portile (~> 0.6.0)
     power_assert (0.2.7)
     rake (10.4.2)
-    rdoc (4.2.0)
-      json (~> 1.4)
+    rdoc (6.3.1)
     test-unit (3.1.8)
       power_assert